gcse-chemistry-paper-2h-predicted-questions-grade-boundaries-2025.pdf
Page 1 of 22
gcse-chemistry-paper-2h-predicted-questions-grade-boundaries-2025.pdf
AQA GCSE
Chemistry Paper 2H
Predicted Paper 2025
Q1 (Haber Process) – ____/12
Q2 (Drugs) – ____/11
Q3 (Early Atmosphere) – ____/16
Q4 (Water) – ____/11
Q5 (Corrosion) – ____/14
Q6 (Pressure) – ____/11
Q7 (Combustion) – ____/10
Q8 (Functional groups) – ____/15
Overall – ____/100
Estimated Grade Boundaries
Grade 3 – 19/100 Grade 9 – 74/100
Grade 4 – 24/100
Grade 5 – 36/100
Grade 6 – 47/100
Grade 7 – 54/100
Grade 8 – 64/100
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gcse-chemistry-paper-2h-predicted-questions-grade-boundaries-2025.pdf
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gcse-chemistry-paper-2h-predicted-questions-grade-boundaries-2025.pdf
1.0 Figure 1 shows a fractionating column in the haber
process.
Figure 1
1.1 Describe the conditions at the top of the fractionating
column in the haber process. [1 mark]
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__________________________________________
The haber process cracks alkanes and alkenes.
1.2 Give two differences between the properties of
alkanes and alkenes. [2 marks]
1_________________________________________
__________________________________________
2_________________________________________
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gcse-chemistry-paper-2h-predicted-questions-grade-boundaries-2025.pdf
A student used bromine water to determine if
alkanes or alkenes are present in a sample from the
fractionating column.
1.3 Explain how the student could use the bromine water
to differentiate alkanes and alkenes. [2 marks]
__________________________________________
__________________________________________
__________________________________________
__________________________________________
1.4 Catalysts are used in the haber process.
Explain how and why catalysts affect the production
of the oils and gases shown in Figure 1. [3 marks]
__________________________________________
__________________________________________
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Turn over to continue Question 1
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