reaction rates

Increase in temperature of the reactants can do one of the following

• Slow collision frequency
• Allow less effective collision between the particles
• Cause particles to lose speed
• Increase collision between the particles thus increasing the rate.

Grinding a seltzer tablet into powder increases the rate of reaction due to increased

• concentration
• surface area
• temperature
• reactants

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

Smaller clumps allow for a _________ surface area to be exposed for the reaction.

• larger
• smaller

Increasing the concentration of the reactants will slow down the reaction.

• false 
• true

Which of these will NOT speed up the rate of reaction between a strip of magnesium and hydrochloric acid?

• tightly coil up the strip of magnesium
• cut up the strip of magnesium
• increase the concentration of the hydrocholoric acid
• increase the temperature of the hydrocholoric acid

Products will form faster if____________

• the surface area of the reactants are smaller.

• temperature is decreased.
• concentration of the reactants are increased.
• the reaction is not stirred.

In which experiment is the rate of reaction between hydrochloric acid and calcium carbonate slowest? 

• A
• B
• C
• D

Which of the following would increase the number of collisions that occur? Choose all that appy.

• Increase Surface Area

• Decrease Concentration

• Increase Temperature

• Increase Volume

How could we make this reaction happen more quickly?

• Decrease the concentration of the acid

• crush the chalk to increase the surface area

• Put the test tube in an ice bath