7.2 Factors affecting Rate of Reaction

Front

The rate of a chemical reaction is NOT affected by which of the following: temperature (°C), concentration, particle size (surface area), All of these affect reaction rates

Back

All of these affect reaction rates

Front

The rate of a reaction increases as temperature (in degrees Celsius) _________________.

Back

Increases

Front

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

Back

catalyst

Front

Catalysts permit reactions to proceed along an ___________ of _________ activation energy.

Back

alternate pathway, lower

Front

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

Back

larger

Front

Increasing the temperature (in degrees Celsius) will increase the kinetic energy of particles, therefore increasing the collisions between particles. True or False?

Back

true

Front

Does increasing the concentration of the reactants slow down the reaction?

Back

No, False

Front

Do exothermic reactions release heat to the surroundings?

Back

Yes, True

Front

____________ states that atoms, ions, or molecules must collide in order to react.

Back

collision theory

Front

Why does increasing the temperature increase the rate of reaction?

Back

Reactant particles gain more kinetic energy and move faster.