OCR GCSE Combined Science A (Gateway) Chemistry Paper 4 Foundation June 2025 mark scheme J250/04
Practise the past exam questions by topic
Periodic table45 Qs
Atmospheric pollutants12 Qs
Using electrolysis to extract metals9 Qs
Life cycle assessment8 Qs
Extraction of metals & reduction9 Qs
Rate of reaction22 Qs
Potable water7 Qs
Dynamic equilibrium8 Qs
Cracking & alkenes10 Qs
Crude oil, hydrocarbons & alkanes15 Qs
Fractional distillation & petrochemicals14 Qs
Greenhouse gases & climate change21 Qs
Three states of matter46 Qs
Composition & evolution of the atmosphere17 Qs
Reactivity of metals15 Qs
Catalysts16 Qs
Conservation of mass & balanced equations52 Qs
Factors affecting the rate of reaction11 Qs
Tests for gases10 Qs
+15 more
16 questions
- Q1 - 1 mark - The periodic table
- Q2 - 1 mark - Atmospheric pollutants
- Q3 - 1 mark - Using electrolysis to extract metals
- Q4 - 1 mark - Life cycle assessment
- Q5 - 1 mark - Extraction of metals and reduction
- Q6 - 1 mark - Rate of reaction
- Q7 - 1 mark - The periodic table
- Q8 - 1 mark - Potable water
- Q9 - 1 mark - Dynamic equilibrium
- Q10 - 1 mark - Rate of reaction
- Q11 - 9 marks - Cracking and alkenes, Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals, Greenhouse gases and climate change
- Q12 - 8 marks - The periodic table, The three states of matter
- Q13 - 7 marks - Greenhouse gases and climate change, The composition and evolution of the atmosphere
- Q14 - 6 marks - Life cycle assessment
- Q15 - 8 marks - Reactivity of metals
- Q16 - 12 marks - Catalysts, Conservation of mass and balanced equations, Factors affecting the rate of reaction, Tests for gases
Your browser can't show this paper here.
Open the PDF