8. The maximum amount of energy required for a reaction to take place.

a. Chemical energy
b. Activation energy
c. Kinetic energy
d. Potential energy

9. Grinding seltzer tablet into powder increases the rate of reaction due to increase in

a. Concentration
b. temperature
c. surface area
d. reaction

10. A substance that increases the rate of a reaction without being used up during the reaction is called a

a. Reactant

b. catalyst

c. product

d. solute​