Honors Chemistry Name: ______________________________________ Date: ________________ Mods: ____________ Honors Chemistry Midterm: Review Packet 1. Write in the number of significant figures for each of the following measurements: ____ 3.00 mL ___ 0.00290 g ___ 50.00 m ___ 0.070 kg ___ 400 L 2. Using the following masses: 0.0562 kg, 124.213 g and 1635 mg. The answer should be reported as: ______________ g 3. a) A 5.75 mL sample of mercury has a measured mass of 77.05 g. The density is ___________. b) Mercury’s accepted density is 13.53 g/mL. The % error in your measurement is: __________. 4. In the diagram below: Is this person accurate? ___________ Is this person precise? ___________ 5. Identify the following as a chemical change (CC), physical change (PC), chemical property (CP), or physical property (PP): a) burning wood __________ b) mass of wood _________ c) flammability of wood _________ d) chopping up wood __________
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Honors Chemistry Midterm: Review Packet€¦ · Honors Chemistry Name: _____ Date: _____ Mods: _____ Honors Chemistry Midterm: Review Packet 1. Write in the number of significant
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1. Write in the number of significant figures for each of the following measurements:
____ 3.00 mL ___ 0.00290 g ___ 50.00 m ___ 0.070 kg ___ 400 L
2. Using the following masses: 0.0562 kg, 124.213 g and 1635 mg. The answer should be reported as: ______________ g
3. a) A 5.75 mL sample of mercury has a measured mass of 77.05 g. The density is ___________.
b) Mercury’s accepted density is 13.53 g/mL. The % error in your measurement is: __________.
4. In the diagram below:
Is this person accurate? ___________
Is this person precise? ___________
5. Identify the following as a chemical change (CC), physical change (PC), chemical property (CP), or physical property (PP):
a) burning wood __________ b) mass of wood _________
c) flammability of wood _________ d) chopping up wood __________
6. A calculator displays the answer to a problem as 53.09010 Report this answer to:
_______________________ 5 significant figures
_______________________ 3 significant figures
_______________________ 1 significant figure
7. a) What is an isotope?
b) Calculate the average atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2297%), 28.9765 amu (4.6832%) and 29.9738 amu (3.0872%).
8. a) Who is the scientist responsible for the discovery of the electron?
b) What was the experiment that led to this discovery?
9. Write the formulas for the following ionic and molecular compounds:
Name Formula
tin (IV) chloride
Tetracarbon diphosphide
aluminum hydroxide
ammonium sulfate
nitrogen tribromide
calcium phosphate
10. Write the names of the following ionic and molecular compounds
Name Formula
Pb3(PO4)2
KMnO4
O2F5
ZnSO4
MgO
PSe2
11. a) The molar mass of Ba(NO3)2 is ________________________________.
b) Calculate the percent composition of each element in Ba(NO3)2
Ba = ____________% N = ___________% O = ___________ %
12. How many particles of CO2 (MM = 44.0 g/mol) are in 17.75 grams of CO2?
13. List the seven diatomic molecules. (The ones that always come in pairs)
14. Balance the following chemical equations and classify their type (single replacement, double replacement, etc.)
a) _____C5H12 + _____O2 _____CO2 + _____H2O
Classify this reaction: ______________________________________________________
b) _____H2O2 _____H2O + ______O2
Classify this reaction: ______________________________________________________
c) _____AgNO3 + _____K2CO3 _____Ag2CO3 + _____KNO3
Classify this reaction: ______________________________________________________