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Chemical Reactions-Ch.7
Test Description: Rates of Chemical Reactions
Instructions: Answer all questions to get your test result.
1) a chemical reaction in which heat energy is released
A
chemical reaction
B
activation energy
C
endothermic reaction
D
exothermic reaction
2) the minimum amount of energy needed to start a chemical reaction
A
heat energy
B
activation energy
C
reaction rate
D
thermal energy
3) a shorthand form for writing what reactants are used and what products are formed in a chemical reaction
A
subscript
B
formula
C
rate of reaction
D
chemical equation
4) a substance that exist before a chemical reaction
A
enzymes
B
reactants
C
inhibitors
D
products
5) the process that produces chemical change, resulting in new substances with properties that are different from those in the original substances
A
chemical equation
B
rate of reaction
C
chemical reaction
D
concentration
6) a substance that speeds up a chemical reaction
A
catalyst
B
reactants
C
enzyme
D
inhibitor
7) a measure of how fast a chemical reaction occurs
A
formula
B
product
C
concentration
D
rate of reaction
8) a chemical reaction in which heat energy is absorbed
A
exothermic reaction
B
activation energy
C
chemical reaction
D
endothermic reaction
9) catalysts that are large protein molecules which speed up reactions
A
products
B
reactants
C
inhibitors
D
enzymes
10) a substance that slows down a chemical reaction
A
enzyme
B
inhibitor
C
catalyst
D
product
11) describes how much solute is present in a solution compared to solvent
A
rate of reaction
B
chemical formula
C
concentration
D
product
12) a substance that forms as a result of a chemical reaction
A
enzyme
B
product
C
reactant
D
catalyst
*select an answer for all questions
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