AQA (9-1) Topic 5

Question 1 of 8

1

Fill the blank space to complete the text.

Oxygen and hydrogen will not react until a lighted splint is used. This is because must be supplied to the reaction to start it.

Explanation

Question 2 of 8

1

Two solutions are added together. The temperature goes down. What type of reaction is this?

Select one of the following:

exothermic
endothermic

Explanation

Question 3 of 8

1

Fill the blank space to complete the text.

The temperature of 50 ml acid, in a 100 ml beaker was 18 Celsius. 2 g of calcium carbonate was added, and when it finished reacting the temperature was now 42 Celsius. The temperature change was Celsius.

Explanation

Question 4 of 8

1

Fill the blank space to complete the text.

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]).

Overall energy change is kJ/mol

Explanation

Question 5 of 8

1

Bonding breaking is an ❌ process, whilst bond making is an ❌ process. In an exothermic reaction, the energy release from forming bonds is ❌ than the energy used to break them.

Drag and drop to complete the text.

endothermic

exothermic

greater

smaller

Explanation

Question 6 of 8

1

Which shows the correct reaction profile for an endothermic reaction?

Select one of the following:

Explanation

Question 7 of 8

1

Which of the following is not an example of an endothermic reaction?

Select one of the following:

electrolysis
combustion
photosynthesis
thermal decomposition

Explanation

Question 8 of 8

1

If the energy change of a reaction has a positive (+) value, then the energy change is ❌; if is has a negative (-) value, then the change is ❌

Drag and drop to complete the text.

endothermic

exothermic

	Created by https:// revisechemistry.uk about 6 years ago

GCSE Chemistry (AQA) Quiz on AQA (9-1) Topic 5, created by https:// revisechemistry.uk on 12/02/2018.

AQA (9-1) Topic 5

Question 1 of 8

Fill the blank space to complete the text.

Oxygen and hydrogen will not react until a lighted splint is used. This is because must be supplied to the reaction to start it.

Explanation

Question 2 of 8

Two solutions are added together. The temperature goes down. What type of reaction is this?

Select one of the following:

Explanation

Question 3 of 8

Fill the blank space to complete the text.

The temperature of 50 ml acid, in a 100 ml beaker was 18 Celsius. 2 g of calcium carbonate was added, and when it finished reacting the temperature was now 42 Celsius. The temperature change was Celsius.

Explanation

Question 4 of 8

Fill the blank space to complete the text.

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]). Overall energy change is kJ/mol

Explanation

Question 5 of 8

Bonding breaking is an ❌ process, whilst bond making is an ❌ process. In an exothermic reaction, the energy release from forming bonds is ❌ than the energy used to break them.

Drag and drop to complete the text.

Explanation

Question 6 of 8

Which shows the correct reaction profile for an endothermic reaction?

Select one of the following:

Explanation

Question 7 of 8

Which of the following is not an example of an endothermic reaction?

Select one of the following:

Explanation

Question 8 of 8

If the energy change of a reaction has a positive (+) value, then the energy change is ❌; if is has a negative (-) value, then the change is ❌

Drag and drop to complete the text.

Explanation

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]).

Overall energy change is kJ/mol