If you can answer all of these you get 50 pts
#1 which is usually associated with a faster reaction rate?
a. adding a catalyst to the reactants
b. blowing a whistle near the reactants
c. removing heat energy from the reactants
d. decreasing the concentration of a solution of the reactants
#2 which is usually associated with a faster reaction rate?
a. adding heat energy to the reactants
b. putting a glass cover over the reactants
c. using a solid with a low surface area in the reactants
d. decreasing the concentration of a solution of the reactants
#3 which is usually associated with a slower reaction rate?
a. adding a catalyst to the reactants
b. using a crushed solid in the reactants
c. using a strong solution of the reactants
d. removing heat energy from the reactants
#4 which is usually associated with a slower reaction rate?
a. ringing a bell near the reactants
b. adding heat energy to the reactants
c. using a weak solution of the reactants
d. using a solid with a high surface area in the reactants
#5 which concentration of hydrochloric acid would most likely react with a zinc metal strip at the fastest rate?
a. 10%
b. 20%
c. 30%
d. 40%
#6 which is usually associated with a faster reaction rate?
a. shaking pepper into the reactants
b. removing heat energy from the reactants
c. using a highly concentrated solution in the reactants
d. using a solid with a low surface area in the reactants
#7 which is usually associated with a slower reaction rate?
a. shaking pepper into the reactants
b. adding heat energy to the reactants
c. using a solid with a low surface area in the reactants
d. using a highly concentrated solution of the reactants