AQA GCSE COMBINED SCIENCE: SYNERGY Higher Tier Paper 4 Physical Sciences Tuesday 13 June 2023

AQA

GCSE
COMBINED SCIENCE: SYNERGY
Higher Tier Paper 4 Physical Sciences

Tuesday 13 June 2023

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G/Jun23/8465/4H

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0 1 This question is about hydrocarbon fuels.

The complete combustion of a hydrocarbon fuel produces carbon dioxide and
one other product.




0 1 . 1 Name the other product of the complete combustion of a hydrocarbon fuel.

Do not refer to carbon dioxide.
[1 mark]




0 1 . 2 Describe the test for carbon dioxide.

Give the result if carbon dioxide is present.
[2 marks]

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Result




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The combustion of hydrocarbon fuels releases energy.

A student investigated the energy released by three different fuels A, B and C.

Figure 1 shows the apparatus.


Figure 1




Conical flask

Water


Burner

Fuel




This is part of the method used.

1. Put fuel A in the burner.

2. Pour 100 cm3 of water into the conical flask.

3. Record the temperature of the water.

4. Light the fuel and heat the water for 5 minutes.

5. Record the final temperature of the water.

6. Repeat steps 1 to 5 using fuel B and then using fuel C.




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