200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 VOCABULARY I VOCABULARY II ATOMIC MODELS & COMPOUNDS
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Jan 20, 2015
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VOCABULARY I VOCABULARY IIATOMIC MODELS
& COMPOUNDS
What is a pure substance made of only one kind of atom?
a. compound c. molecule
b. atom d. element
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d. element
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Vocabulary I for $100
What is the smallest unit of a compound?
a. compound c. molecule
b. atom d. element
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c. molecule
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Vocabulary I for $300
What is a pure substance made of two or more kinds of atoms that are chemically bonded together?
a. compound c. molecule
b. atom d. element
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Vocabulary I for $300
a. compound
What is the smallest piece that an element can be divided into and still be the same substance?
a. compound c. molecule
b. atom d. element
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Vocabulary I for $400
b. atom
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What is a substance made of two or more kind of atoms or compounds that can be
seperated without chemical changes?
a. solution c. mixture
b. atom d. element
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c. mixture
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What is the letter or letters that represent an element in the Periodic Table?
a. chemical formula b. chemical equation
c. chemical symbol d. chemical bond
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Vocabulary II for $100
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c. chemical symbol
What is the set of letters that represent a compound? It shows how many of each type of atom that makes up one molecule.
a. chemical formula b. chemical equation
c. chemical symbol d. chemical bond
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Vocabulary II for $200
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a. chemical formula
What is the chemical equation that
shows how a chemical reaction works?
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a. chemical formula b. chemical equation
c. chemical symbol d. chemical bond
b. chemical equation
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What is the connection that holds together the atoms in a compound?
a. chemical formula b. chemical equation
c. chemical symbol d. chemical bond
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d. chemical bond
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What is the difference between an element and a compound?
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An element is a pure substance that CANNOT BE BROKEN DOWN into simpler substances. ex. H (hydrogen)
A compound is a pure substance made of two or more elements that are chemically bonded. It CAN BE BROKEN DOWN into simpler substances through chemical changes.
ex. H2O (water)
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The chemical formula for water is H20. How many of each kind of atom make up water?
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two hydrogens atoms one oxygen atom
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The chemical formula for Carbazole is C12H9N.
How many of each kind of atom make up carbazole?
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12 carbon atoms9 Hydrogen atoms1 nitrogen atom
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Boron has an atomic number of 5 and an atomic mass of 11.
How many protons does it have? _____
How many electrons does it have? ____
How many neutrons does it have? _____
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BORON Atomic Number = 5 Atomic Mass = 11
The number of protons is equal to the atomic number, so Boron has 5 protons.
The number of electrons is equal to the number of protons (in unionized state). So Boron has 5 electrons.
The number of neutrons is equal to the atomic mass minus the electrons. 11 - 5 = 6 So Boron has 6 neutrons.
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Fluorine has an atomic number of 9 and an atomic mass of 19.
How many protons does it have? _____
How many electrons does it have? ____
How many neutrons does it have? _____
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FLUORINE Atomic Number = 9 Atomic Mass = 19
The number of protons is equal to the atomic number, so Boron has 9 protons.
The number of electrons is equal to the number of protons (in unionized state). So Boron has 9 electrons.
The number of neutrons is equal to the atomic mass minus the electrons. 19 - 9 = 10 So Boron has 10 neutrons.
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Draw a model of carbon dioxide. CO2 element chemical symbol # of bonds
oxygen O 2
carbon C 4
element chemical symbol # of bonds
oxygen O 2
carbon C 4
O=C=O
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