AQA GCSE COMBINED SCIENCE: TRILOGY Higher Tier Chemistry Paper 2H June 2023

AQA

GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier Chemistry Paper 2H

June 2023

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IB/M/Jun23/8464/C/2H

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0 1 The combustion of fuels is a source of atmospheric pollutants. box




0 1 . 1 Methane is a fuel.

Balance the equation for the combustion of methane.
[1 mark]


CH4 + O2 → CO2 + H2O




0 1 .2 Many fuels are mixtures.

Petrol and diesel are mixtures of hydrocarbons.

Table 1 shows properties of petrol and of diesel.

Table 1


Petrol Diesel

Range of number of carbon atoms in
4 to 12 12 to 20
a hydrocarbon molecule

Range of boiling points in °C 40 to 205 250 to 350



Compare the properties of petrol and diesel.

Use Table 1.
[2 marks]




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IB/M/Jun23/8464/C/2H