Rates of Reactions

Front

What effect does adding a catalyst have on activation energy?

Back

Lowers the activation energy.

Front

How does smaller particle size affect the surface area for a reaction?

Back

Allows for a larger surface area to be exposed for the reaction.

Front

According to collision theory, what must particles do for a reaction to occur?

Back

Collide with sufficient energy and correct orientation.

Front

Why does higher concentration increase the rate of reaction?

Back

It increases the frequency of particle collisions because there are more collision sites.

Front

Which group of particles shows that increasing surface area increases collisions among particles?

Back

Right side.

Front

Define 'activation energy'.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the collision theory?

Back

A theory that states that for a reaction to occur, particles must collide with sufficient energy and proper orientation.

Front

How does temperature affect the rate of reaction?

Back

Increasing temperature generally increases the rate of reaction by providing more energy to the particles.

Front

What is the relationship between surface area and reaction rate?

Back

Increasing surface area increases the rate of reaction by allowing more particles to collide.

Front

What role do catalysts play in chemical reactions?

Back

Catalysts speed up reactions by lowering the activation energy without being consumed in the process.