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Section 5.1
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1
What is a precipitate?
A)A precipitate is a liquid that is formed in a chemical reaction.
B)A precipitate is a gas that is formed in a chemical reaction.
C)A precipitate is a soluble solid that is formed in a chemical reaction.
D)A precipitate is an insoluble solid that is formed in a chemical reaction.
2
Which of the following observations, by itself, suggests a chemical change has occurred?
A)change in size
B)formation of a gas
C)change in colour
D)change in state
3
What happens during a synthesis reaction?
A)One reactant changes into a new product.
B)Two or more reactants combine to form two or more new products.
C)Two or more reactants combine to form one new product.
D)One reactant is split to form two or more new products.
4
What is the general equation for a synthesis reaction?
A)A + B → AB
B)AB → A + B
C)A + B → C + D
D)A → B
5
What happens during a decomposition reaction?
A)Two or more compounds are broken down to form micro compounds.
B)Two or more compounds or elements are combined to form a single compound.
C)One compound is broken down into two or more simpler compounds or elements.
D)A solid compound is converted into a gas.
6
What is the general equation for decomposition?
A)C + D → A + B
B)AB → A + B
C)A + B → AB
D)A → B





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