Rates of chemical reactions

Front

What happens to the rate of reaction when the concentration of reactants increases?

Back

The rate of reaction increases.

Front

What effect does smaller particle size have on the surface area for a reaction?

Back

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

Front

What is the rate of reaction?

Back

The time it takes for a reaction to occur.

Front

How does grinding a seltzer tablet into powder affect the rate of reaction?

Back

It increases the rate of reaction due to increased surface area.

Front

Which of the following will NOT speed up the rate of reaction between magnesium and hydrochloric acid?

Back

Tightly coiling up the strip of magnesium.

Front

What is Collision Theory?

Back

Collision Theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

How does temperature affect the rate of chemical reactions?

Back

Increasing the temperature generally increases the rate of reaction.

Front

What role does a catalyst play in a chemical reaction?

Back

A catalyst speeds up the rate of reaction without being consumed in the process.

Front

Define activation energy.

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What is the relationship between surface area and reaction rate?

Back

A larger surface area increases the rate of reaction.