Reaction Rate

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What happens to a catalyst in a reaction?

Back

It remains unchanged.

Front

How does temperature affect reaction rates?

Back

Higher temperatures increase the rate of a reaction by increasing both the frequency and energy of particle collisions.

Front

What is activation energy?

Back

The minimum energy required for reactants to undergo a chemical reaction.

Front

What is collision theory?

Back

A theory that states particles must collide in order to react, and that these collisions must occur with sufficient energy and proper orientation.

Front

What is the role of particle orientation in reactions?

Back

Particles must collide with the proper orientation to react effectively.

Front

What is the effect of concentration on reaction rates?

Back

Increasing the concentration of reactants generally increases the rate of reaction due to a higher frequency of collisions.

Front

What is the effect of surface area on reaction rates?

Back

Increasing the surface area of solid reactants increases the rate of reaction by allowing more collisions to occur.

Front

What is the effect of humidity on reaction rates?

Back

Humidity does not significantly affect the rate of a chemical reaction.

Front

What is the relationship between pressure and reaction rates in gases?

Back

Increasing pressure in gaseous reactions increases the rate by reducing the volume and increasing the frequency of collisions.