Chapter 7-Chemical Reactions Part III: Question Preview (ID: 27832)

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A(n) ________________ makes the formation of a certain amount of product take longer.
a) inhibitor
b) reactant
c) product
d) enzyme

____________ 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

A chemical reaction begins with substances called ______________ and ends with substances called ___________.
a) enzymes, products
b) inhibitors, reactants
c) products, reactants
d) reactants,products

Most chemical reactions ______________ when temperature increases.
a) abate
b) speed up
c) slow down
d) remain the same

Most chemical reactions _____________ when concentration increases.
a) remain the same
b) slow down
c) speed up
d) stop

The fire in a fireplace is an example of an exothermic reaction. Explain what happens in an exothermic reaction.
a) heats up only
b) heats up, has no energy
c) heats, up releases energy
d) heats up. absorbs energy

_____________ slows down most chemical reactions.
a) Lowering the temperature
b) Raising the temperature
c) Keeping the temperature the same
d) Keeping it at room temperature

The _________________ is the speed at which products form or reactants disappear.
a) catalyst
b) activation energy
c) rate of reaction
d) inhibitor

_____________ is(are) needed to break bonds in chemical reactions.
a) Energy
b) Enzymes
c) Inhibitors
d) Catalysts

Catalysts are always ______________.
a) bonds
b) enzymes
c) inhibitors
d) reactants

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