OCR Gateway GCSE Combined Science past papers
OCR Gateway GCSE Combined Science November 2021 Paper 4
- J250/04
- Foundation
- Chemistry 2
- 1 hour 10 minutes
- 60 marks
Question paper, Mark scheme: on the OCR website.
Practise this paper's topics
5 new exam questions, 22 minutes, marked as you go. Free, no account.
- Group 1 and Group 7
- Rates of reaction, collisions and catalysts
- Crude oil, alkanes, cracking and alkenes
- Greenhouse gases, climate change and carbon footprints
- Electrolysis
What it tested
- Rates and equilibrium19 marks
- Atomic structure and the periodic table14 marks
- The atmosphere10 marks
- Organic chemistry8 marks
- Chemical changes8 marks
- Using resources1 marks
- Q1Atmospheric pollutants1 mark
- Q2Group 1 and Group 71 mark
- Q3Life cycle assessment and recycling1 mark
- Q4The atmosphere, then and now1 mark
- Q5The periodic table, metals and noble gases1 mark
- Q6Greenhouse gases, climate change and carbon footprints1 mark
- Q7Crude oil, alkanes, cracking and alkenes1 mark
- Q8Group 1 and Group 71 mark
10 more questions
- Q9Reactivity, extraction and reduction1 mark
- Q10Greenhouse gases, climate change and carbon footprints1 mark
- Q11Group 1 and Group 74 marks
- Q12Group 1 and Group 77 marks
- Q13Crude oil, alkanes, cracking and alkenesAtmospheric pollutants7 marks
- Q14Reversible reactions and equilibriumExothermic and endothermic reactions, reaction profiles7 marks
- Q15ElectrolysisLife cycle assessment and recycling7 marks
- Q16Greenhouse gases, climate change and carbon footprints6 marks
- Q17Rates of reaction, collisions and catalysts8 marks
- Q18Rates of reaction, collisions and catalysts4 marks
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