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CW9: Exothermic and Endothermic reactions

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What type of reaction is shown in this energy profile diagram

a)

Exothermic

b)

Endothermic

2.

What type of reaction is shown in the energy profile diagram attached?

a)

Exothermic

b)

Endothermic

c)

Activation Energy

d)

Products

3.

What does 'A' represent on the energy profile diagram attached?

a)

Products

b)

Energy lost

c)

Activation Energy

d)

Overall change in energy

4.

What does 'X' represent in the energy profile shown here?

a)

Energy

b)

Products

c)

Reactants

d)

Reaction progess (time)

5.

What does 'Z' represent in the energy profile shown here?

a)

Reactants

b)

Energy

c)

Activation energy

d)

Products

6.

What does 'W' represent in the energy profile diagram shown?

a)

Energy

b)

Reactants

c)

Products

d)

Activation energy

7.

What does 'Q' represent in the energy profile shown here?

a)

Energy

b)

Reaction rate (time)

c)

Reactants

d)

Activation energy

8.

An instant icepack is an example of what type of reaction?

a)

Endothermic

b)

Exothermic

c)

Acid base

d)

Neutralisation

9.

Burning a match is an example of what type of reaction?

a)

Endothermic

b)

Exothermic

c)

Neutralisation

d)

Physical

10.

What effect will a catalyst or enzyme have on a reaction?

a)

Reduce the activation energy required

b)

Increase the activation energy required

c)

No effect

d)

Increase the time taken to react