Controlling chemical reactions - OCR Gateway

1

How can the volume of a gas given off be measured during a reaction?

2

How could an average rate of reaction be calculated?

3

During a typical chemical reaction, what happens to the rate of reaction over time?

4

On a graph showing mass of reactant used against time, what does the gradient of the line show?

5

What must happen for two particles to react with each other?

6

What can you deduce when the line on a reaction graph has become horizontal?

7

In collision theory, what determines the rate of a reaction?

8

What happens to the mass of a catalyst between the start and end of a reaction?

9

What is an enzyme?

10

What happens to the activation energy for a reaction in the presence of a catalyst?