Rates of reaction

Question 1

4 ways to increase the rate of a chemical reaction are….

Answer 1

1. Increase the concentration.
2. Increase the surface area or decrease the particle size.
3. Increase the temperature.
4. Use a catalyst.

Question 2

A catalyst is…..

Answer 2

A substance that speed up chemical reactions but can be recovered chemically unchanged at the end of the reaction.

Question 3

The average rate of a chemical reaction can be calculated using the equation:

                  Rate =  ?

Answer 3

Rate = change in quantity / change in time

Question 4

What happens to the rate of reaction as time passes?

Answer 4

Rate decreases as time passes