Chemical Reactions Quiz 3

The burning of fuels, such as coal, natural gas, or oil, involves a(n) reaction.

• enzymes
• exothermic
• concentration
• increase
• greater

In an endothermic reaction, the energy of the products is than the energy of the reactants.

• enzymes
• exothermic
• concentration
• increase
• greater

Increasing the temperature of a reaction will _ the rate of the reaction.

• enzymes
• exothermic
• concentration
• increase
• greater

The amount of a substance in a given volume is called

• enzymes
• exothermic
• concentration
• increase
• greater

Biological catalysts in the human body are called

• enzymes
• exothermic
• concentration
• increase
• greater

Increasing the surface area of the reactants will decrease the rate of the reaction.

• True
• False, have no effect
• False, increase

The effect of a catalyst on a reaction is to raise the activation energy.

• True
• False, lower
• False, stop
• False, start

Only some reactions require activation energy.

• True
• False, synthesis
• False, all
• False, endothermic

An inhibitor decreases the rate of a reaction.

• True
• False, catalyst
• False, enzymes
• False, reactant

The amount of a substance in a given volume is the concentration of the substance

• True
• False, dilution
• False, ratio
• False, strength