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Chapter 7-Chemical Reactions Part III
Test Description: Chemical
Instructions: Answer all questions to get your test result.
1) A(n) ________________ makes the formation of a certain amount of product take longer.
A
inhibitor
B
product
C
reactant
D
enzyme
2) ____________ help your body convert food to fuel, build bone and muscle tissue, and convert extra energy to fat.
A
Products
B
Inhibitors
C
Enzymes
D
Reactants
3) A chemical reaction begins with substances called ______________ and ends with substances called ___________.
A
products, reactants
B
inhibitors, reactants
C
reactants,products
D
enzymes, products
4) Most chemical reactions ______________ when temperature increases.
A
slow down
B
speed up
C
remain the same
D
abate
5) Most chemical reactions _____________ when concentration increases.
A
remain the same
B
speed up
C
stop
D
slow down
6) The fire in a fireplace is an example of an exothermic reaction. Explain what happens in an exothermic reaction.
A
heats, up releases energy
B
heats up. absorbs energy
C
heats up, has no energy
D
heats up only
7) _____________ slows down most chemical reactions.
A
Keeping it at room temperature
B
Lowering the temperature
C
Raising the temperature
D
Keeping the temperature the same
8) The _________________ is the speed at which products form or reactants disappear.
A
activation energy
B
catalyst
C
rate of reaction
D
inhibitor
9) _____________ is(are) needed to break bonds in chemical reactions.
A
Enzymes
B
Energy
C
Inhibitors
D
Catalysts
10) Catalysts are always ______________.
A
inhibitors
B
reactants
C
bonds
D
enzymes
*select an answer for all questions
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