OCR GCSE Combined Science A (Gateway) Chemistry Paper 10 Higher June 2025 mark scheme J250/10
Practise the past exam questions by topic
Dynamic equilibrium8 Qs
Rate of reaction22 Qs
Cracking & alkenes10 Qs
Collision theory & activation energy8 Qs
Fractional distillation & petrochemicals14 Qs
Crude oil, hydrocarbons & alkanes15 Qs
Alternative methods of extracting metals5 Qs
Composition & evolution of the atmosphere17 Qs
Using electrolysis to extract metals9 Qs
Reactivity of metals15 Qs
Catalysts16 Qs
Conservation of mass & balanced equations52 Qs
Factors affecting the rate of reaction11 Qs
Tests for gases10 Qs
Atmospheric pollutants12 Qs
Greenhouse gases & climate change21 Qs
Electronic structure18 Qs
Potable water7 Qs
Periodic table45 Qs
Effect of changing conditions on equilibrium7 Qs
Reducing the use of resources6 Qs
+17 more
16 questions
- Q1 - 1 mark - Dynamic equilibrium
- Q2 - 1 mark - Rate of reaction
- Q3 - 1 mark - Cracking and alkenes
- Q4 - 1 mark - Collision theory and activation energy
- Q5 - 1 mark - Fractional distillation and petrochemicals
- Q6 - 1 mark - Crude oil, hydrocarbons and alkanes
- Q7 - 1 mark - Alternative methods of extracting metals
- Q8 - 1 mark - The composition and evolution of the atmosphere
- Q9 - 1 mark - Using electrolysis to extract metals
- Q10 - 1 mark - Reactivity of metals
- Q11 - 12 marks - Catalysts, Conservation of mass and balanced equations, Factors affecting the rate of reaction, Tests for gases
- Q12 - 9 marks - Atmospheric pollutants, Greenhouse gases and climate change
- Q13 - 11 marks - Electronic structure, Potable water, The periodic table
- Q14 - 6 marks - The effect of changing conditions on equilibrium
- Q15 - 8 marks - Reducing the use of resources
- Q16 - 4 marks - Greenhouse gases and climate change
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