Chemistry Concepts and Applications

Section 1: Chemical Equations

Self Check Quizzes

1
Changes in energy, color, and odor are indications that a __________ has taken place.
A)chemical reaction
B)displacement reaction
C)precipitation reaction
D)separation reaction
2
A description of a chemical reaction that includes the names of all reactants and products, but not the formulas, is called a __________.
A)balanced equation
B)chemical equation
C)skeleton equation
D)word equation
3
The substances to the left of the reaction arrow are called __________.
A)gases
B)precipitates
C)products
D)reactants
4
The substances to the right of the reaction arrow are called __________.
A)products
B)reactants
C)gases
D)precipitates
5
If a lump of coal contains 200 billion carbon atoms and it burns completely, how many oxygen atoms will it consume?

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A)50 billion
B)100 billion
C)200 billion
D)400 billion
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