Chemistry, Chapter 2 Test

7/17/2019 Chemistry, Chapter 2 Test

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Chemistry , 6e (McMurry/Fay)Chapter 2 Atoms, Molecules, and Ions

2.1 Multiple-Choice Questions

1) Accordin to histor!" the concept that all matter is composed of atoms was first proposed b!

A) the #reek philosopher $emocritus" but not widel! accepted until modern times.%) $alton" but not widel! accepted until the work of Mendelee&.

C) $alton" but not widel! accepted until the work of 'instein.$) $alton" and widel! accepted within a few decades.

Answer: A

(opic: ection 2.1 (he Conser&ation of Mass and the *aw of $efinite +roportions

2) (he obser&ation that 1,. of h!droen reacts with 12. of o!en to form 1,. of water is

e&idence for the law of

A) definite proportions.%) ener! conser&ation.

C) mass conser&ation.

$) multiple proportions.Answer: C


) (he obser&ation that 0. of h!droen reacts with 2. of o!en to form a product with

: mass ratio 3 4:1" and 5. of h!droen reacts with 04. of o!en to form the same product

with / mass ratio 3 4:1 is e&idence for the law of

A) definite proportions.%) ener! conser&ation.

C) mass conser&ation.

$) multiple proportions.Answer: A


0) Methane and o!en react to form carbon dioide and water. 6hat mass of water is formed if .2 of

methane reacts with 12.4 of o!en to produce 4.4 of carbon dioide7

A) 8.2

%) 4.4 C) 10.4

$) 15.

Answer: A(opic: ection 2.1 (he Conser&ation of Mass and the *aw of $efinite +roportions




download full file at http://testbankcafe.com,) odium metal and water react to form h!droen and sodium h!droide. 9f ,.4 of sodium react withwater to form .25 of h!droen and 1.0 of sodium h!droide" what mass of water was consumed

in the reaction7

A) 0.54 %) ,.4

C) 1.10

$) 1.55 Answer: A


5) A sample of pure lithium carbonate contains 14.4; lithium b! mass. 6hat is the ; lithium b! mass in

a sample of pure lithium carbonate that has twice the mass of the first sample7

A) .0;

%) 14.4;C) 8.5;

$) 8,.2;

Answer: %(opic: ection 2.1 (he Conser&ation of Mass and the *aw of $efinite +roportions

8) A sample of pure calcium fluoride with a mass of 1,. contains 8.8 of calcium. ow muchcalcium is contained in 0,. of calcium fluoride7

A) 2.,5

%) 8.8

C) 1,. $) 2.1

Answer: $


4) (he obser&ation that h!droen and o!en can react to form two compounds with different chemical

and ph!sical properties" one ha&in an : mass ratio 3 4:1 and the other ha&in an : mass ratio 315:1 is consistent with the law of

A) definite proportions.

%) ener! conser&ation.

C) mass conser&ation.$) multiple proportions.

Answer: $

(opic: ection 2.2 (he *aw of Multiple +roportions and $alton<s Atomic (heor!

) 6hich of the followin statements is not a postulate of $alton<s atomic theor!7

A) 'ach element is characteri=ed b! the mass of its atoms.

%) Atoms are composed of protons" neutrons" and electrons.C) Chemical reactions onl! rearrane atomic combinations.

$) 'lements are composed of atoms.Answer: %





download full file at http://testbankcafe.com1) 6hich of the followin is a part of $alton<s atomic theor!7A) Atoms are rearraned but not chaned durin a chemical reaction.

%) Atoms break down durin radioacti&e deca!.

C) Atoms contain protons" neutrons" and electrons.$) 9sotopes of the same element ha&e different masses.

Answer: A


11) 6hich of the followin is not eplained b! $alton<s atomic theor!7

A) conser&ation of mass durin a chemical reaction%) the eistence of more than one isotope of an element

C) the law of definite proportions

$) the law of multiple proportions

Answer: %(opic: ection 2.2 (he *aw of Multiple +roportions and $alton<s Atomic (heor!

12) 'lements A and Q form two compounds" AQ and A2Q. (he mass ratio >mass Q)/>mass A) for AQ is

.,80. 6hat is the mass ratio >mass Q)/>mass A) for A2Q

7

A) .4

%) .451

C) 1.15

$) 2.51Answer: %


1) 'lements A and Q form two compounds" AQ and A2Q. 6hich of the followin must be true7

A) >mass Q)/>mass A) is one for AQ" and 1/2 for A2Q.

%) >mass Q)/>mass A) for AQ must e?ual >mass Q)/>mass A) for A2Q.

C) >mass Q)/>mass A) for AQ must be 2 times >mass Q)/>mass A) for A2Q.$) >mass Q)/>mass A) for AQ must be 1/2 >mass Q)/>mass A) for A2Q.

Answer: C


10) 'lements A and Q form two compounds. (he ratio >mass Q)/>mass A) for compound one is .281

and ratio >mass Q)/>mass A) for compound two is .52. 9f compound one has the chemical formula AQ"what is the chemical formula for compound two7

A) AQ0

%) A2Q

C) AQ2$) AQ

Answer: A(opic: ection 2.2 (he *aw of Multiple +roportions and $alton<s Atomic (heor!




download full file at http://testbankcafe.com1,) (he eistence of electrons in atoms of all elements was demonstrated b!A) Millikan<s oil drop eperiment.

%) @utherford<s old foil eperiment.

C) (homson<s cathode ra! tube eperiment.$) one of these

Answer: C

(opic: ection 2. Atomic tructure: 'lectrons

15) (he chare-to-mass ratio of an electron was established b!

A) Millikan<s oil drop eperiment.%) @utherford<s old foil eperiment.

C) (homson<s cathode ra! tube eperiment.

$) one of these

Answer: C(opic: ection 2. Atomic tructure: 'lectrons

18) (he current model of the atom in which essentiall! all of an atom<s mass is contained in a &er! smallnucleus" whereas most of an atom<s &olume is due to the space in which the atom<s electrons mo&e was

established b!A) Millikan<s oil drop eperiment.%) @utherford<s old foil eperiment.

C) (homson<s cathode ra! tube eperiment.

$) one of these

Answer: %(opic: ection 2.0 Atomic tructure: +rotons and eutrons

14) (he eistence of neutrons in the nucleus of an atom was demonstrated b!A) Millikan<s oil drop eperiment.

%) @utherford<s old foil eperiment.

C) (homson<s cathode ra! tube eperiment.$) one of these

Answer: $

(opic: ection 2.0 Atomic tructure: +rotons and eutrons

1) Most of the alpha particles directed at a thin old foil in @utherford<s eperiment

A) bounced directl! back from the foil.

%) passed directl! throuh the foil undeflected.C) passed throuh the foil but were deflected at an anle.

$) were absorbed b! the foil.

Answer: %


2) 6hich subatomic particle has the smallest mass7A) a proton

%) a neutron

C) an electron$) an alpha particle

Answer: C





download full file at http://testbankcafe.com21) A proton is approimatel!A) 2 times larer than an electron.

%) 2 times larer than an electron.

C) 2 times smaller than an electron.$) 2 times smaller than an electron.

Answer: %


22) (he s!mbol that is usuall! used to represent atomic number is BBBBBBBB.

A) A

%) N

C) X

$) Z

Answer: $(opic: ection 2., Atomic umbers

2) (he mass number of an atom is e?ual to the number ofA) electrons.

%) neutrons.C) protons.$) protons plus neutrons.

Answer: $

(opic: ection 2., Atomic umbers

20) 6hich of the followin two atoms are isotopes7

A) 0Ar 14

and 0Ca2

%) 12C5

and 1/C5

C) ,Cl18 and 4%r ,

$) 20M12

and 12C5

Answer: %


2,) 6hich are isotopes7 An atom that has an atomic number of 0 and a mass number of 85 is an isotope

of an atom that has

A) an atomic number of 2 and a mass number of 85.%) an atomic number of 0 and a mass number of 4.

C) 02 neutrons and 0 protons.

$) 02 protons and 0 neutrons.Answer: %





download full file at http://testbankcafe.com25) 6hich of the followin represent isotopes7

A: 2,21

D %: 212,

D C: 2821

D $: 2,2

D

A) A and %

%) A and C

C) A and $

$) C and $

Answer: %(opic: ection 2., Atomic umbers

28) (he isotope represented b! 1/C5

is named

A) carbon-5

%) carbon-8C) carbon-1

$) carbon-1

Answer: C(opic: ection 2., Atomic umbers

24) %oron- can be represented as

A) %e0

.

%) : %,

.

C) 10%,

.

$) 10%:

.


2) ow man! protons >p) and neutrons >n) are in an atom of r 4

7

A) 4 p" ,2 n

%) 4 p" nC) ,2 p" 4 n

$) p" 4 n

Answer: A(opic: ection 2., Atomic umbers

) ow man! protons >p) and neutrons >n) are in an atom of calcium-057

A) 2 p" 25 n%) 2 p" 05 n

C) 25 p" 2 n

$) 05 p" 5 nAnswer: A





download full file at http://testbankcafe.com1) 6hat is the chemical s!mbol for an atom that has 2 protons and 5 neutrons7A) Cu

%) Er

C) $) (b

Answer: A


2) ow man! electrons are in a neutral atom of iodine-117

A) 1%) ,

C) ,0

$) 11Answer: %


) ow man! protons >p)" neutrons >n)" and electrons >e) are in one atom of 2M12

7

A) 12 p" 12 n" 12 e%) 12 p" 11 n" 12 e

C) 12 p" 11 n" 1 e

$) 12 p" 11 n" 10 eAnswer: %


0) 9dentif! the chemical s!mbol of element Q in 4-Q

/0.

A) %r

%)

C) +d$) e

Answer: $(opic: ection 2., Atomic umbers

,) (he atoms of a particular element all ha&e the same number of protons as neutrons. 6hich of the

followin must be true7A) (he atomic weiht must be a whole number.

%) (he mass number for each atom must e?ual the atomic weiht of the element.

C) (he mass number must be eactl! twice the atomic number for each atom.$) All of these are true.

Answer: C(opic: ection 2., Atomic umbers




download full file at http://testbankcafe.com5) (he smallest sample of carbon atoms that can be obser&ed with the naked e!e has a mass of

approimatel! 2 F 1-4 . #i&en that 1 3 5.2 F 12 amu" and that carbon has an atomic weiht of

12.1 amu" determine the number of carbon atoms present in the sample.

A) 1 F 11,

%) 1 F 115

C) 1 F 118

$) 5 F 12Answer: A

(opic: ection 2.5 Atomic Masses and the Mole

8) An element has two naturall! occurrin isotopes. ne has an abundance of 8.0; and an isotopic

mass of 140., amu" and the other has an abundance of 52.5; and a mass of 145.,5 amu. 6hat is the

atomic weiht of the element7A) 14,.82 amu

%) 14,.,0 amu

C) 145.28 amu$) 145.,5 amu

Answer: C(opic: ection 2.5 Atomic Masses and the Mole

4) (he element antimon! has an atomic weiht of 121.8,8 amu and onl! two naturall!-occurrin

isotopes. ne isotope has an abundance of ,8.; and an isotopic mass of 12.0 amu. %ased on these

data" what is the mass of the other isotope7A) 121.8,8 amu

%) 122. amu

C) 122.51 amu$) 122.2 amu

Answer: $


) 6hat is the standard isotope that is used to define the number of atoms in a mole7

A) 1

%) 12C

C) 15

$) 2 e

Answer: %(opic: ection 2.5 Atomic Masses and the Mole

0) (he number of atoms of carbon in 12 of carbon is closest to .A) 12

%) 122

C) 12

$) 120

Answer: $(opic: ection 2.5 Atomic Masses and the Mole




download full file at http://testbankcafe.com01) 6hat is the mass of one atom of the element h!droen7A) 2.

%) 1.

C) .0 F 1-20

$) 1.8 F 1-20

Answer: $


02) ne mole of which element has the smallest mass7

A) Co

%) CuC) i

$) Gn

Answer: C(opic: ection 2.5 Atomic Masses and the Mole

0) 20. of which element contains the reatest number of atoms7

A) %%) C

C)

$) Answer: A


00) ow man! moles and how man! atoms of =inc are in a sample weihin 0. 7

A) ., mol" 4.4, F1-2, atoms

%) ., mol" .21 F12 atoms

C) 1.48 mol" .1 F 1-20 atoms

$) 1.48 mol" 1.1 F 120 atoms

Answer: %(opic: ection 2.5 Atomic Masses and the Mole

0,) 6hich statement about nuclear reactions is true7A) ew elements are ne&er produced in a nuclear reaction.

%) uclear reactions in&ol&e &alence electrons.

C) (he rate of a nuclear reaction is affected b! catal!sts.$) (remendous amounts of ener! are in&ol&ed in nuclear reactions.

Answer: $

(opic: ection 2.8 uclear Chemistr!: (he Chane of ne 'lement 9nto Another

05) (he term HnucleonsH refers to the number of BBBBBBBB in the atom.

A) neutrons

%) protonsC) protons and neutrons

$) protons" neutrons" and electrons

Answer: C(opic: ection 2.8 uclear Chemistr!: (he Chane of ne 'lement 9nto Another




download full file at http://testbankcafe.com08) (he number of nucleons in an atom or ion is the same as theA) atomic number.

%) chare on the atom or ion.

C) mass number.$) none of these

Answer: C


04) (he number of nucleons in a 25 2IJ2

nucleus is

A) 2.

%) 100.

C) 25.$) 24.

Answer: C


0) (he number of neutrons in ,, 2IKe25

is

A) 25.%) 2.

C) ,.

$) ,,.Answer: %


,) H9sotopesH are atoms with the same number of BBBBBBBB but different number of BBBBBBBB.A) electrons" protons

%) neutrons" protons

C) protons" electrons$) protons" neutrons

Answer: $


,1) (he rate of a nuclear reaction can be chaned b!

A) addin a catal!st.

%) decreasin the pressure.C) increasin the temperature.

$) one of these

Answer: $





download full file at http://testbankcafe.com,2) 6hich of the followin statements is not correct when balancin a nuclear e?uation7

9. (he mass numbers must be conser&ed on both sides of the reaction arrow.

99. (he ionic chares must be conser&ed on both sides of the reaction arrow.

999. (he atomic numbers must be conser&ed on both sides of the reaction arrow.9L. (he elements must be the same on both sides of the reaction arrow.

A) 99 onl!

%) 99 and 999C) 9 and 999

$) 99 and 9L

Answer: $(opic: ection 2.4 @adioacti&it!

,) An alpha particle is

A) 1 I

1.

%) 2 I1

.

C) I1

.

$) 0 2Ie2

.

Answer: $

(opic: ection 2.4 @adioacti&it!

,0) 6hen a substance deca!s b! alpha radiation" the mass number of the nucleus BBBBBBBB and the

atomic number BBBBBBBB.

A) increases b! 0" increases b! 2%) reduces b! 0" reduces b! 2

C) increases b! 2" increases b! 0

$) reduces b! 2" reduces b! 0Answer: %


,,) (he nuclear deca! process that in&ol&es the particle ha&in the reatest mass is BBBBBBBB emission.

A) alpha

%) betaC) amma

$) positron

Answer: A





download full file at http://testbankcafe.com,5) A beta particle is

A) e1−

.

%) 1e-− .

C) 1 p1

.

$) 0 e2 .

Answer: A(opic: ection 2.4 @adioacti&it!

,8) 6hen a substance deca!s b! beta emission" the mass number of the nucleus BBBBBBBB and theatomic number BBBBBBBB.

A) decreases b! 1" remains the same

%) increases b! 1" remains the same

C) remains the same" decreases b! 1$) remains the same" increases b! 1

Answer: $


,4) %eta deca! of 20 a produces a beta particle and

A) 2K.

%) 2 a.

C) 20 e.

$) 20M.

Answer: $(opic: ection 2.4 @adioacti&it!

,) 6hich of the followin statements about amma radiation is false7A) 9t almost alwa!s accompanies alpha or beta emission.

%) 9t is a mechanism to release ecess ener! in the nucleus.

C) #amma ra!s are hih ener! photons.$) (he mass number decreases b! one with each amma emitted.

Answer: $


5) #amma radiation can be described as

A) a helium nucleus.%) a neati&el! chared free electron.

C) hih ener! electromanetic radiation.$) a positi&el! chared free electron.Answer: C





download full file at http://testbankcafe.com51) A positron is

A) 1n

.

%) 1 p1

.

C) e1

.

$) -e1− .

Answer: C(opic: ection 2.4 @adioacti&it!

52) +ositron emission chanes the atomic number of an element b!A) -2.

%) -1.

C) I1.

$) I2.Answer: %


5) 6hich of the followin statements about positrons is false7

A) (he positron has same mass as an electron.

%) A positron is eected from the nucleus durin the con&ersion of a proton into a neutron.C) A positron is a positi&e electron.

$) 6hen positron emission occurs" the atomic number of the nucleus increases.

Answer: $


50) (he nuclear transformation potassium-0 aron-0 I 7 is classified asA) alpha emission.

%) beta emission.

C) electron capture.$) positron emission.

Answer: $


5,) 6hich of the followin statements about electron capture is false7

A) (he electron is used to con&ert a proton to a neutron.

%) (he electron in&ol&ed is most likel! an outer shell &alence electron.C) 9n electron capture deca!" the atomic number decreases b! one.

$) 9n electron capture deca!" the mass number remains unchaned.

Answer: %(opic: ection 2.4 @adioacti&it!




download full file at http://testbankcafe.com55) 6hich one of the followin processes does not result in transmutation to another element7A) alpha emission

%) beta emission

C) electron capture$) amma emission

Answer: $


58) 6hich of the followin deca! processes i&e a product nuclide whose atomic number is one less

than the startin nuclide7A) alpha deca!

%) beta deca! and positron deca!

C) amma deca! and beta deca!

$) positron deca! and electron captureAnswer: $


54) 6hich reaction below represents

1,

4 deca! b! positron emission7

A) 1,4

N -e1−

I 1,@a:

%) 1,4

N e1

I 1, A

8

C) 1,4

N 1e-− I 15

4

$) 1,4

N 1e

I 104

Answer: %(opic: ection 2.4 @adioacti&it!

5) 6hich reaction below represents 2/2(h:-

deca! b! alpha emission7

A) 22(h

N 0e

2 I 224@a

44

%) 2/2(h:-

N 2e0

I 2/-@a45

C)

22(h N p I

21Ac4

$)

22(h N n I

21(h

Answer: A






8) 6hich reaction below represents 00(i22

deca! b! electron capture7

A) 00(i22

I 1e-− N 0/(i

22

%) 00(i22

I 1e

N 0,(i22

C) 00(i

22

I -e

1

N 00(i

2/$) 00(i

22 I e

1− N 00c

21Answer: $


81) 9n addition to a beta particle" what is the other product of beta deca! of 1/19,/

7

A) 128b,1

%) 1/1(e/2

C) 11Oe,0

$) 1/,Cs,,

Answer: C


82) (ritium" 1

" is formed in the upper atmosphere when 10 8

captures a neutron and then deca!s.

6hat is the other product of this reaction7

A) 1/C5

%) 12C5

C) 12%,

$) 11%,

Answer: %


8) 6hen more than known nuclides are plotted on a neutron/proton rid the! make up a roupcalled

A) the Hisland of stabilit!.H

%) the Hpeninsula of nuclear stabilit!.HC) the Hsea of instabilit!.H

$) none of these

Answer: %(opic: ection 2. uclear tabilit!




download full file at http://testbankcafe.com80) 6hich is the onl! element that contains more protons than neutrons in its most abundant stableisotope7

A) boron

%) carbonC) h!droen

$) mercur!

Answer: C(opic: ection 2. uclear tabilit!

8,) As the atomic number of the elements increases" the ratio of neutrons to protons in stable nucleiA) decreases.

%) sta!s the same.

C) increases.

$) is unrelated to stabilit!.Answer: C

(opic: ection 2. uclear tabilit!

85) 6hich one of the followin statements about isotopes is false7

A) (he ratio of neutrons to protons is about 1:1 for elements lihter than Ca.%) (he ratio of neutrons to protons is P 1:1 for elements hea&ier than Ca.C) onradioacti&e isotopes enerall! ha&e an odd number of neutrons.

$) All isotopes be!ond 2%i are radioacti&e.

Answer: C


88) 6hich one of the followin combinations of neutrons/protons results in the lowest number of

nonradioacti&e >stable) isotopes7

A) e&en number protons/e&en number neutrons%) e&en number protons/odd number neutrons

C) odd number protons/e&en number neutrons

$) odd number protons/odd number neutronsAnswer: $


84) 6hich of the followin elements would !ou epect to ha&e the largest number of stable isotopes7

'lement number:

A) 04

%) 0C) ,

$) ,1

Answer: C(opic: ection 2. uclear tabilit!




download full file at http://testbankcafe.com8) 6hich of the followin elements would be epected to be particularl! stable7

A) 0Ca2

%) /4E 1:

C) Ar 1

$) /8 Cl18Answer: A(opic: ection 2. uclear tabilit!

4) 6hich process decreases the neutron/proton ratio7A) alpha emission

%) beta emission

C) electron capture

$) positron emissionAnswer: %


41) A radioisotope has a neutron/proton ratio which is too low. 6hich of the followin processes will

not occur for such a nucleus7

A) alpha emission%) beta emission

C) electron capture

$) positron emission


42) A radioisotope which is neutron poor and &er! hea&! is most likel! to deca! b!A) alpha emission" electron capture" or positron emission.

%) onl! alpha emission.

C) onl! electron capture.$) onl! positron emission.

Answer: A


4) 6hich of the followin nuclides is most likel! to undero beta deca!7

A) 14

%) 1:,4-

C) 24

$) 2-,4-

Answer: $





download full file at http://testbankcafe.com40) 6hich of the followin nuclides is most likel! to deca! b! electron capture7

A) 14

%) 1:,4-

C) 24

$) 2-,4-Answer: A(opic: ection 2. uclear tabilit!

4,) 6hat nuclide is formed when 2/4J

:2 underoes a portion of the deca! series: alpha" beta" beta"

alpha" alpha" alpha.

A) 225@a44

%) 222@n45

C) 2/-(h:-

$) 25+b42

Answer: %


45) 6hen 222@n45

deca!s in a ,-step series the product is 21-+b42

. ow man! alpha and beta particles

are emitted in the deca! series7

A) 2 " R-

%) " 2 R-

C) 0 " 1 R-

$) 1 " 0 R-


48) A banana split is an eample of

A) a compound.%) an element.

C) a heteroeneous miture.

$) a homoeneous miture.

Answer: C(opic: ection 2.1 Mitures and Chemical Compounds: Molecules and Co&alent %onds




download full file at http://testbankcafe.com44) Apple uice is an eample of A) a compound.

%) an element.

C) a heteroeneous miture.$) a homoeneous miture.

Answer: $

(opic: ection 2.1 Mitures and Chemical Compounds: Molecules and Co&alent %onds

4) #old is an eample of




Answer: %(opic: ection 2.1 Mitures and Chemical Compounds: Molecules and Co&alent %onds

) Carbon dioide is an eample of A) a compound.

%) an element.C) a heteroeneous miture.$) a homoeneous miture.

Answer: A


1) teel is al&ani=ed b! i&in it a surface coatin of =inc. #al&ani=ed steel is an eample of




Answer: C(opic: ection 2.1 Mitures and Chemical Compounds: Molecules and Co&alent %onds

2) ow man! electrons are in the ion" Gn2I7A) 24

%)

C) 2

$) 5,Answer: A

(opic: ection 2.11 9ons and 9onic %onds

) ow man! electrons are in the ion" +-7A) 12

%) 14

C) 24$) 0

Answer: %





download full file at http://testbankcafe.com0) 9n which of the followin sets do all species ha&e the same number of electrons7

A) %r -" Er" r 2I

%) C" -" 2-

C) M2I" r 2I" %a2I

$) " 2-" 2I

Answer: A


,) 9n which of the followin sets do all species ha&e the same number of protons7

A) %r -" Er" r 2I

%) C" -" 2-

C) M2I" r 2I" %a2I

$) " 2-" 2I

Answer: $


5) 6hat is the identit! of element Q if the ion Q2I

contains 1 electrons7A) C

%) C) e

$) M

Answer: $(opic: ection 2.11 9ons and 9onic %onds

8) ow man! electrons are in the ion" C2-7

A) 15

%) 24

C) $) 2


4) 9n which set do all elements tend to form cations in binar! ionic compounds7

A) *i" %" %) M" Cr" +b

C) " As" %i

$) " K" ClAnswer: %


) 9n which set do all elements tend to form anions in binar! ionic compounds7

A) C" " +b

%) E" Ke" %r

C) *i" a" E $) " " 9

Answer: $





download full file at http://testbankcafe.com1) 6hat is the most likel! chare on an ion of phosphorus" +7A) ,-

%) -

C) I$) ,I

Answer: %


11) 6hich element can form more than one kind of monatomic ion7

A) Ca%) Cl

C) Cr

$) CsAnswer: C


12) 6hich element can form more than one kind of monatomic ion7

A)

%) eC) n

$) r

Answer: C


1) 6hat t!pe of bondin is found in the compound +Cl,7

A) co&alent bondin

%) h!droen bondinC) ionic bondin

$) metallic bondin

Answer: A(opic: ection 2.11 9ons and 9onic %onds

10) 6hich one of the followin compounds contains ionic bonds7A) Ca

%) K

C) 9

$) i2


1,) 6hich of the followin is the correct chemical formula for a molecule of bromine7A) %r

%) %r -

C) %r I

$) %r 2

Answer: $


15) 6hich of the compounds" *i+" +" C25" 9%r " are ionic compounds7




download full file at http://testbankcafe.comA) onl! C25%) onl! *i+

C) *i+ and +$) +" C25" and 9%r

Answer: %


18) 6hich of the compounds" C4" MCl2" Gn>)2" Cl2" are epected to eist as molecules7

A) onl! C4

%) C4 and Cl2

C) C4" Gn>)2" and Cl2

$) MCl2 and Gn>)2

Answer: %(opic: ection 2.11 9ons and 9onic %onds

14) 6hich of the species below has 24 protons and 25 electrons7

A) Ke2I%) i2I

C) ,0Ke25

$) ,0 Ai24

Answer: %


1) 6hich of the followin elements has the least tendenc! to form an ion7

A) Ca

%) E C) Er

$) e

Answer: C(opic: ection 2.11 9ons and 9onic %onds




download full file at http://testbankcafe.com11) %ut!ric acid has the structural formula i&en below.

6hat is the molecular or chemical formula for but!ric acid7

A) C%) C20

C) C042

$) C,4

Answer: C


111) (he solid compound" a2C" contains

A) aI

" C0I

" and 2-

ions.%) aI ions and C2-ions.

C) a2I and C2- ions.

$) a2C molecules.

Answer: %


112) 6hich of the followin statements concernin ionic compounds is true7

A) 'ssentiall! all ionic compounds are solids at room temperature and pressure.

%) 9onic compounds do not contain an! co&alent bonds.C) 9onic compounds contain the same number of positi&e ions as neati&e ions.

$) (he chemical formula for an ionic compound must show a non=ero net chare.


11) (he as Kreon-11" CClK" contains

A) C0I" Cl-" and K- ions.

%) C0I" Cl-" and K- ions.

C) C0I and ClK0- ions.

$) CClK molecules.


110) (he definiti&e distinction between ionic bondin and co&alent bondin is thatA) ionic bondin in&ol&es a sharin of electrons and co&alent bondin in&ol&es a transfer of electrons.

%) ionic bondin in&ol&es a transfer of electrons and co&alent bondin in&ol&es a sharin of electrons.

C) ionic bondin re?uires two nonmetals and co&alent bondin re?uires a metal and a nonmetal.$) co&alent bondin re?uires two nonmetals and ionic bondin re?uires a metal and a nonmetal.

Answer: %






11,) 6hat is the chemical formula for iron>99) phosphate7

A) Ke2+

%) Ke2+0

C) Ke+2

$) Ke>+0)2

Answer: $(opic: ection 2.12 amin Chemical Compounds

115) 6hat is the chare on the Cr in the ionic compound Cr 27

A) 2-%) 1I

C) 2I

$) IAnswer: $

(opic: ection 2.12 amin Chemical Compounds

118) *i2 is namedA) lithium disulfide.

%) lithium sulfide.

C) lithium>99) sulfide.$) lithium sulfur.

Answer: %


114) 6hat is the chemical formula for strontium h!droide7

A) r2

%) r

C) r2$) r>)2Answer: $


11) 6hat is the chemical formula for strontium h!dride7

A) r2

%) rC) r2$) r>)2

Answer: A(opic: ection 2.12 amin Chemical Compounds




download full file at http://testbankcafe.com12) (he formula for dinitroen trioide isA) >).

%) >)2.

C) 2.

$) 2.

Answer: C


121) (he chemical formula for the sulfite ion is

A) -.

%) 2-.

C) 2-.

$) 02-.

Answer: C(opic: ection 2.12 amin Chemical Compounds

122) (he chemical formula for potassium peroide isA) E.

%) E2.

C) E 2.

$) E 22.

Answer: $


12) (he compound" Cu>Cl)2" is named

A) copper chlorate>99).

%) copper>9) chlorate.C) copper>9) chlorate>99).

$) copper>99) chlorate.


120) %! analo! with the ooanions of sulfur" 2(e would be named

A) h!drotellurous acid.

%) pertelluric acid.

C) telluric acid.

$) tellurous acid.Answer: $






12,) (he ions Cl0-" Cl-" Cl2-" and Cl- are named respecti&el!

A) h!pochlorate" chlorate" chlorite" perchlorite.%) h!pochlorite" chlorite" chlorate" perchlorate.

C) perchlorate" chlorate" chlorite" h!pochlorite.

$) perchlorite" chlorite" chlorate" h!pochlorate.Answer: C


125) (he compound" 2" is named

A) nitrate.

%) nitrite.

C) nitroen dioide.

$) nitroen>9L) oide.Answer: C


128) (he ion 2- is named

A) nitrate ion.%) nitrite ion.

C) nitroen dioide ion.

$) nitroen>99) oide ion.Answer: %


124) (he chemical formula for calcium nitride is

A) Ca>)2.

%) Ca>2)2.

C) Ca 2.

$) Ca2.


12) (he thiosulfate ion is

A) -.

%) 02-.

C) ,2-.

$) 22-.





download full file at http://testbankcafe.com1) E2+0 is

A) h!dropotassium phosphate.

%) potassium dih!droen phosphate.

C) potassium diphosphate.

$) potassium h!droen>99) phosphate.Answer: %


11) 6hat are the names of the ions %a2I" n2I" and e2-7A) barium" tin" and selenium

%) barium" tin>99)" and selenide

C) barium>99)" tin>99)" and selenium>99-)$) barous" stannous" and selenide

Answer: %


12) 6hich of the abo&e drawins represents a pure element7

A) drawin >a)%) drawin >b)

C) drawin >c)

Answer: %(opic: Conceptual +roblems

1) 6hich of the abo&e drawins represents a pure compound7A) drawin >a)

%) drawin >b)

C) drawin >c)Answer: A

(opic: Conceptual +roblems

10) 6hich of the abo&e drawins represents a miture7


C) drawin >c)Answer: C





download full file at http://testbankcafe.com1,) 6hich of the followin drawins represents a collection of acet!lene >C22) molecules7 (he

shaded spheres represent carbon atoms and the unshaded spheres represent h!droen atoms.

A) drawin >a)

%) drawin >b)C) drawin >c)

$) drawin >d)

Answer: C


15) 9f unshaded spheres represent sulfur atoms and shaded spheres represent o!en atoms" which ofthe followin drawins depicts a collection of sulfur trioide molecules7


C) drawin >c)

$) drawin >d)Answer: $






18) 6hich of the abo&e drawins represents an Ar atom7


C) drawin >c)

$) drawin >d)Answer: %


14) 6hich of the abo&e drawins represents a Cl- ion7A) drawin >a)

%) drawin >b)

C) drawin >c)$) drawin >d)

Answer: A


1) 6hich of the abo&e drawins represents a Ca2I ion7

A) drawin >a)


$) drawin >d)

Answer: $


10) 6hich of the abo&e drawins represents a E I ion7


C) drawin >c)

$) drawin >d)Answer: C





download full file at http://testbankcafe.com101) Assume that the miture of substances in drawin >1) underoes a chemical reaction. 6hich of thedrawins >2)->0) represents a product miture that is consistent with the law of mass conser&ation7

A) drawin >2)%) drawin >)

C) drawin >0)


102) Assume that the miture of substances in drawin >1) underoes a chemical reaction. 6hich of thedrawins >2)->0) represents a product miture that is consistent with the law of mass conser&ation7

A) drawin >2)

%) drawin >)

C) drawin >0)Answer: C





download full file at http://testbankcafe.com10) 6hich of the followin drawins depicts a chemical reaction consistent with $alton<s atomictheor!7

A) drawin a)

%) drawin b)

C) drawin c)

$) drawin d)Answer: A


100) 6hich of the followin drawins depicts a chemical reaction consistent with $alton<s atomic

theor!7

A) drawin a)

%) drawin b)C) drawin c)

$) drawin d)

Answer: $(opic: Conceptual +roblems




download full file at http://testbankcafe.com10,) 9f shaded and unshaded spheres represent atoms of different elements" as shown in drawin >1)"which drawins >2)->0) represent the law of multiple proportions7

A) onl! drawins >2) and >)%) onl! drawins >2) and >0)

C) onl! drawins >) and >0)

$) drawins >2)" >)" and >0)Answer: C


105) 9f shaded and unshaded spheres represent atoms of different elements" as shown in drawin >1)"

which drawins >2)->0) represent the law of multiple proportions7

A) onl! drawins >2) and >)

%) onl! drawins >2) and >0)


$) drawins >2)" >)" and >0)Answer: %



which drawins >2)->0) represent the law of multiple proportions7




$) drawins >2)" >)" and >0)Answer: A





download full file at http://testbankcafe.com104) 9f shaded and unshaded spheres represent atoms of different elements" as shown in drawin >1)"which drawins >2)->0) represent the law of multiple proportions7



C) onl! drawins >) and >0)$) drawins >2)" >)" and >0)

Answer: $



which combination of drawins >2)->0) represent the law of multiple proportions7

A) onl! drawins >2) and >)%) onl! drawins >2) and >0)

C) onl! drawins >) and >0)$) drawins >2)" >)" and >0)Answer: $


1,) 6hich of the followin fiures represents 1

7 Jnshaded spheres represent neutrons and shaded

spheres represent protons.

A) fiure >1)

%) fiure >2)C) fiure >)

$) fiure >0)






1,1) 6hich of the followin fiures represents 11%,



A) fiure >1)%) fiure >2)

C) fiure >)

$) fiure >0)Answer: $


1,2) 6hich of the followin fiures represents 1, A



A) fiure >1)%) fiure >2)

C) fiure >)

$) fiure >0)Answer: A





download full file at http://testbankcafe.com1,) (ell the t!pe of deca! process occurrin in the followin nuclear reaction.

A) emission

%) R emissionC) S emission

$) electron capture or positron emission


1,0) (ell the t!pe of deca! process occurrin in the followin nuclear reaction.

A) emission%) R emissionC) S emission


Answer: $





download full file at http://testbankcafe.com1,,) (ell the t!pe of deca! process occurrin in the followin nuclear reaction.

A) emission%) R emission

C) S emission





C) S emission$) electron capture or positron emission

Answer: %





download full file at http://testbankcafe.com1,8) (ell the t!pe of deca! process occurrin in the followin nuclear reaction.


C) S emission

$) electron capture or positron emissionAnswer: A




C) S emission







1,) 6hat kind of deca! process is occurrin in the deca! of isotope A to isotope % in the fiure shown

abo&e7A) emission

%) R emission

C) S emission



15) 6hat kind of deca! process is occurrin in the deca! of isotope % to isotope C in the fiure shown

abo&e7A) emission

%) R emission

C) S emission$) electron capture or positron emission

Answer: %


151) 6hat kind of deca! process is occurrin in the deca! of isotope C to isotope $ in the fiure shown

abo&e7


C) S emission

$) electron capture or positron emissionAnswer: %


152) 6hat kind of deca! process is occurrin in the deca! of isotope $ to isotope ' in the fiure shown

abo&e7A) emission

%) R emissionC) S emission


Answer: A(opic: Conceptual +roblems




download full file at http://testbankcafe.com15) #i&e the molecular formula correspondin to the followin ball-and-stick molecular representationof &itamin C >ascorbic acid) >ra! 3 C" unshaded 3 " black 3 ). 9n writin the formula" list the atoms

in alphabetical order.

A) C%) C0

C) C505

$) C545

Answer: $


150) #i&e the molecular formula correspondin to the followin ball-and-stick molecular representation

of naphthalene >ra! 3 C" unshaded 3 ). 9n writin the formula" list the atoms in alphabetical order.

A) C

%) C,0

C) C14

$) C11

Answer: C(opic: Conceptual +roblems





15,) 9f shaded and unshaded spheres represent atoms of different elements" which of the abo&e drawinsmost likel! represents an ionic compound at room temperature and a pressure of 1 atm7

A) drawin >a)


$) drawin >d)


155) 9f shaded and unshaded spheres represent atoms of different elements" which of the abo&e drawins

most likel! represents a molecular compound at room temperature and a pressure of 1 atm7A) drawin >a)

%) drawin >b)


Answer: %


158) 9f shaded and unshaded spheres represent atoms of different elements" which of the abo&e drawins

most likel! represents an ionic compound at room temperature and a pressure of 1 atm7


C) drawin >c)

$) drawin >d)





download full file at http://testbankcafe.com154) 9f shaded and unshaded spheres represent atoms of different elements" which of the abo&e drawinsmost likel! represents a molecular compound at room temperature and a pressure of 1 atm7

A) drawin >a)


$) drawin >d)


Jse the periodic table below to answer the followin ?uestions.

15) 6hich elements commonl! form anions7A) A and %

%) A and C

C) % and $$) C and $

Answer: $


18) 6hich elements commonl! form cations7

A) A and %

%) A and CC) % and $

$) C and $


181) 6hich elements commonl! form co&alent bonds7A) A and %

%) A and C

C) % and $$) C and $Answer: $





download full file at http://testbankcafe.com9n the followin drawins" shaded spheres represent cations and unshaded spheres represent anions.

182) 6hich drawin represents the ionic compound M>+0)27


C) drawin >c)

$) drawin >d)


18) 6hich drawin represents the ionic compound a2C7A) drawin >a)%) drawin >b)

C) drawin >c)

$) drawin >d)Answer: %


180) 6hich drawin represents the ionic compound CaCl27

A) drawin >a)

%) drawin >b)


Answer: C


18,) 6hich drawin represents the ionic compound E7

A) drawin >a)


$) drawin >d)

Answer: A


185) 6hich drawin represents the ionic compound 0Cl07


C) drawin >c)

$) drawin >d)Answer: A






Jse the periodic table below to answer the followin ?uestions.

188) 6hich is the correct formula of the binar! fluoride of element A7A) AK2

%) AK

C) AK,

$) AK5Answer: A


184) 6hich is the correct formula of the binar! fluoride of element %7

A) %K2

%) %K

C) %K,$) %K5Answer: %


18) 9n which pair are both formulas of binar! fluorides of element C correct7

A) CK2 and CK

%) CK2 and CK5

C) CK and CK,

$) CK, and CK5


14) 9n which pair are both formulas of binar! fluorides of element $ correct7

A) $K2 and $K%) $K2 and $K5

C) $K and $K,

$) $K, and $K5

Answer: %





download full file at http://testbankcafe.com141) 6hich is most likel! to form a binar! oide with the formula M >where M 3 element A" %" C" or$)7

A) element A

%) element %C) element C

$) element $


142) 6hich is most likel! to form a binar! oide with the formula M >where M 3 element A" %" C" or

$)7A) element A

%) element %

C) element C$) element $

Answer: $


14) 6hich is most likel! to form a binar! oide with the formula M2 >where M 3 element A" %" C"

or $)7

A) element A

%) element %C) element C

$) element $


140) 6hich is most likel! to form a binar! oide with the formula M01 >where M 3 element A" %" C"

or $)7A) element A

%) element %

C) element C$) element $

Answer: C


2.2 Alorithmic Questions

1) Methane and o!en react to form carbon dioide and water. 6hat mass of water is formed if .4

of methane reacts with .2 of o!en to produce 2.2 of carbon dioide7

A) 1.4 %) 2.2

C) .8

$) 0.

Answer: A(opic: ection 2.1 (he Conser&ation of Mass and the *aw of $efinite +roportions




download full file at http://testbankcafe.com2) odium metal and water react to form h!droen and sodium h!droide. 9f ,.4 of sodium reactwith water to form .25 of h!droen and 1.0 of sodium h!droide" what mass of water was

in&ol&ed in the reaction7

A) 0.54 %) ,.4

C) 1.10

$) 1.55 Answer: A


) A sample of pure lithium carbonate contains 14.4.0; lithium b! mass. 6hat is the ; lithium b!

mass in a sample of pure lithium carbonate that has twice the mass of the first sample7

A) .0;

%) 14.4;C) 8.5;

$) 8,.2;

Answer: %(opic: ection 2.1 (he Conser&ation of Mass and the *aw of $efinite +roportions

0) A sample of pure calcium fluoride with a mass of 1,. contains 8.8 of calcium. ow muchcalcium is contained in 0. of calcium fluoride7

A) 2.28

%) 8.8

C) 1,. $) 2.,

Answer: $


,) 'lements A and Q form two compounds" AQ and A2Q. (he mass ratio >mass Q)/>mass A) for AQ is

. 21. 6hat is the mass ratio >mass Q)/>mass A) for A2Q7

A) . 10%) . 05

C) 2.2

$) ,.1,Answer: %


5) 6hich are isotopes7 An atom that has an atomic number of 2 and a mass number of 02 is an isotope

of an atom that has

A) an atomic number of 21 and a mass number of 02.

%) an atomic number of 2 and a mass number of 0.C) 22 neutrons and 2 protons.

$) 22 protons and 2 neutrons.





download full file at http://testbankcafe.com8) 6hich of the followin represent isotopes7

A: 21,

D %: 215

D C: /11,

D $: 018

D

A) A and %

%) A and C

C) A and $

$) C and $


4) ow man! protons >p) and neutrons >n) are in an atom of :-)r /4

7

A) 4 p" ,2 n

%) 4 p" nC) ,2 p" 4 n

$) p" 4 n

Answer: A(opic: ection 2., Atomic umbers

) ow man! protons >p) and neutrons >n) are in an atom of barium-17

A) ,5 p" 80 n

%) ,5 p" 1 n

C) 80 p" ,5 n$) 1 p" ,5 n

Answer: A


1) 6hat is the element s!mbol for an atom that has , protons and 5 neutrons7

A) %

%) CC)

$) aAnswer: A


11) ow man! electrons are in a neutral atom of bromine-417A) 1

%) ,

C) 5$) 41






12) 9dentif! the chemical s!mbol of element Q in 4-Q

/0.

A) %r %)

C) +d

$) e

Answer: $


1) (he number of nucleons in a 2/0(h:-

nucleus is

A) .

%) 100.

C) 20.$) 20.

Answer: C


10) %eta deca! of 2+ produces a beta particle andA) 24Al.

%) 1+.

C) 2i.

$) 2.Answer: $


1,) 9n addition to a beta particle" what is the other product of beta deca! of 119,

7

A)128

)b,1

%) 11(e,2

C) 1/1Oe,0

$) 1,Cs,,

Answer: C


15) 6hich of the followin elements would be epected to be particularl! stable7

A)15

4

%) 10 8

C) 1,C5

$) 1%,

Answer: A





download full file at http://testbankcafe.com18) 6hich of the followin nuclides is most likel! to undero beta deca!7

A) 14

%) 1:,4-

C) 24

$) 2-,4-Answer: $(opic: ection 2. uclear tabilit!

14) 6hich nuclide below is most likel! to deca! b! electron capture7

A) 185680

%) 14-680

C) 140680

$) 144680

Answer: A


1) Crude oil is an eample of



$) a homoeneous miture.Answer: C


2) #asoline is an eample of A) a compound.

%) an element.


Answer: $


21) #old is an eample of



$) a homoeneous miture.Answer: %





download full file at http://testbankcafe.com22) Ammonia is an eample of A) a compound.

%) an element.


Answer: A


2) 9n which set do all elements tend to form cations in binar! ionic compounds7

A) E" #a" %) r" i"

C) " +" %i

$) " %r" 9


20) ow man! electrons are in the ion" Cu2I7

A) 28%) 2

C) 1

$) 50Answer: A


2,) ow man! electrons are in the ion" +-7A) 12

%) 14

C) 24

$) 0Answer: %


25) 9n which of the followin sets do all species ha&e the same number of electrons7

A) K-" e" M2I

%) #e" e2-" %r -

C) E I" @bI" CsI

$) %r" %r -" %r I

Answer: A


28) 9n which of the followin sets do all species ha&e the same number of protons7

A) K-" e" M2I

%) #e" e2-" %r -

C) E I" @bI" CsI

$) %r" %r -" %r I






24) 6hat is the identit! of element Q if the ion Q2I contains 1 electrons7A) C

%)

C) e

$) MAnswer: $


2) ow man! electrons are in the ion" +0-7

A) 25

%) 00

C) 08

$) ,Answer: $


) 9n which set do all elements tend to form anions in binar! ionic compounds7

A) C" " +b%) E" Ke" %r C) *i" a" E

$) " " 9


1) 6hat t!pe of bondin is found in the compound K27

A) co&alent bondin%) h!droen bondin

C) ionic bondin

$) metallic bondinAnswer: A


2) 6hich one of the followin compounds contains ionic bonds7

A) r

%) %r C) + %r $) i2Answer: A


) 6hich of the followin is the correct chemical formula for a molecule of astatine7

A) At

%) At-

C) AtI

$) At2





download full file at http://testbankcafe.com0) 6hich of the compounds" *i " " C4" 9K are ionic compounds7

A) onl! C4%) onl! *i C) *i and

$) " C4" and 9 K

Answer: %


,) 6hich of the compounds C0" rCl2" Cr>)" OeK2 are epected to eist as molecules7

A) onl! C0

%) C0 and Oe K2

C) C0" Cr>)2" and Oe K2

$) rCl2 and Cr>)2


5) 6hich of the followin elements has the least tendenc! to form an ion7A) Ca

%) E

C) Er $) e

Answer: C


8) (he solid compound" M>)2" contains

A) M2I" ,I" and 2- ions.

%) M2I ions and >2- ions.

C) M 2I and >2- ions.

$) M>)2 molecules.

Answer: %


4) 6hat is the chemical formula for iron> 999) sulfate7

A) Ke

%) Ke0C) Ke2$) Ke2> 0)





download full file at http://testbankcafe.com) 6hat is the chare on the Cr ions in Cr 27

A) 2-

%) 1I

C) 2I

$) IAnswer: $


0) @b2 is named

A) rubidium disulfide.

%) rubidium sulfide.

C) rubidium>99) sulfide.$) rubidium sulfur.

Answer: %


01) 6hat is the chemical formula for calcium h!droide7

A) Ca2%) Ca

C) Ca2

$) Ca>)2

Answer: $


02) 6hat is the chemical formula for manesium h!dride7

A) M2

%) MC) M2

$) M>)2

Answer: A


0) An a?ueous solution of 2 is named

A) h!drosulfuric acid.

%) h!drosulfurous acid.

C) sulfuric acid.$) sulfurous acid.

Answer: A


00) (he chemical formula for the sulfite ion is

A) -.

%) 2-.

C) 2-.

$) 02-.






0,) (he chemical formula for lithium peroide is

A) *i.

%) *i2.

C) *i2.

$) *i22.


05) (he compound" Cu> 9 )2" is named

A) copper iodate>99).

%) copper>9) iodate.C) copper>9) iodate>99).

$) copper>99) iodate.

Answer: $


08) (he compound" " is namedA) sulfate.

%) sulfite.C) sulfur trioide.

$) sulfur > L9) oide.


04) (he ion" 92-" is named

A) iodate ion.

%) iodite ion.

C) iodine dioide ion.$) iodine>99) oide ion.

Answer: %(opic: ection 2.12 amin Chemical Compounds

0) (he chemical formula for nitrous acid isA) >aq).

%) 2>aq).

C) >aq).

$) 2 25>aq).

Answer: %(opic: ection 2.12 amin Chemical Compounds




download full file at http://testbankcafe.com,) (he chemical formula for calcium nitride isA) Ca>)2.

%) Ca>2)2.

C) Ca 2.

$) Ca2.

Answer: C


2. hort Answer Questions

1) 9n the reaction %r I a N 2 I a%r" 9f 41 %r react with 0 of a to produce 14

of 2" the number of rams of a%r produced is BBBBBBBB.

Answer: 1


2) Accordin to the law of multiple proportions" if 12 of carbon combine with 15 of o!en to form

C" the number of rams of carbon that combine with 15 of o!en in the formation of C2 is

________. Answer: 5


) (he chare to mass ratio of an electron was determined from @utherfordTs cathode-ra! tube

eperiment to be 1.8, F 14 C/ and the chare on a sinle electron was determined from the Millikan

oil drop eperiment to be 1.52 F 1-1 C" so the mass of a sinle electron is ________ .

Answer: .11 × 1-24

(opic: ection 2. Atomic tructure: 'lectrons

0) (he subatomic particles contained in the nucleus of an atom are BBBBBBBB and BBBBBBBB.Answer: protons" neutrons


,) Atoms of the same element alwa!s ha&e the same number of BBBBBBBB in their nuclei.

Answer: protons(opic: ection 2., Atomic umbers

5) 9sotopes ha&e the same number of BBBBBBBB but different numbers of BBBBBBBB in their nuclei.Answer: protons" neutrons


8) (he s!mbol of the isotope ha&in Z 3 44 and A 3 225 is BBBBBBBB.

Answer: 225@a44


4) (he s!mbol for technetium-4 is BBBBBBBB.

Answer: :4(c0/





download full file at http://testbankcafe.com) (he number of neutrons in a neutral atom of uranium-24 is BBBBBBBB.Answer: 105


1) A neutral atom with atomic number , and mass number 11 contains BBBBBBBB electrons.

Answer: ,


11) Chlorine has two common isotopes" chlorine-, and chlorine-8" and an atomic mass of ,.0, amu.

(he natural abundance of chlorine-, is BBBBBBBB >reater than" less than" the same as) the naturalabundance of chlorine-8.

Answer: reater than


12) (he number of atoms in 2 of a is BBBBBBBB >reater than" less than" the same as) the number of

atoms in 12 of C.

Answer: the same as(opic: ection 2.5 Atomic Masses and the Mole

1) (o the nearest whole number" the number of rams of %a in .2, mol of %a is BBBBBBBB.Answer: 005


10) (he number of moles of *i in 0.8 *i is BBBBBBBB.Answer: ,. mol


1,) (he number of protons" neutrons" and total nucleons in 15@u00

are BBBBBBBB" BBBBBBBB" and

BBBBBBBB" respecti&el!.Answer: 00" 52" 15


15) (he missin reactant in the nuclear reaction 7 N 10 A8

I -e1−

is BBBBBBBB.

Answer: 10C5


18) 9n a nuclear reaction" the s!mbol for a beta particle is BBBBBBBB.

Answer: -e1−

or R-


14) 9n a nuclear reaction 0e2

is the s!mbol for BBBBBBBB.

Answer: an alpha particle


1) 2/4J:2

underoes alpha deca! producin one alpha particle and a sinle nuclide. (o balance the




download full file at http://testbankcafe.come?uation" BBBBBBBB and BBBBBBBB must be added to the riht side of the e?uation below.

2/4J

:2 N 7 I 7

Answer: 2/0(h:-

" 0e

2


2) 9n an electron capture reaction a proton is con&erted into a BBBBBBBB.Answer: neutron


21) uclei that are in the band of stabilit! ha&e a neutron/proton ratio BBBBBBBB >e?ual to" reater than"

less than) 1:1.

Answer: reater than(opic: ection 2. uclear tabilit!

22) 1; saline solution >sodium chloride dissol&ed in water) is an eample of a BBBBBBBB miture.Answer: homoeneous


2) (he number of electrons in the ion Ca2I is BBBBBBBB.Answer: 14


20) (he number of electrons in the ion C0U is BBBBBBBB.Answer: 1


2,) (he bondin in M is BBBBBBBB" whereas the bondin in C is BBBBBBBB.

Answer: ionic" co&alent(opic: ection 2.11 9ons and 9onic %onds

25) +hosphate ion has the formula BBBBBBBB.

Answer: +0U


28) (he formula of iron>999) oide contains BBBBBBBB iron>999) and BBBBBBBB oide ions.

Answer: 2"


Chemistry, Chapter 2 Test

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