GCSE Chemistry Revision & Practice Questions
Exam-style GCSE Chemistry practice questions with full teaching explanations — revise anywhere, free on iOS and Android.
2,000 practice questions
10 topics
Full teaching explanations
Works offline
Topics covered
- Atomic Structure & the Periodic Table — 200 questions
- Bonding, Structure & Properties of Matter — 200 questions
- Quantitative Chemistry — 200 questions
- Chemical Changes — 200 questions
- Energy Changes — 200 questions
- Rate & Extent of Chemical Change — 200 questions
- Organic Chemistry — 200 questions
- Chemical Analysis — 200 questions
- Chemistry of the Atmosphere — 200 questions
- Using Resources — 200 questions
Try 10 free sample questions
These are real questions from the app — the correct answer is highlighted, and every question in the app comes with a full teaching explanation like the one shown.
Atomic Structure & the Periodic Table
All substances are made of tiny particles called:
- Atoms
- Cells
- Waves
- Magnets
Show explanation
Correct answer: Atoms
Bonding, Structure & Properties of Matter
When a gas cools and turns into a liquid, this is called:
- Melting
- Evaporating
- Freezing
- Condensing
Show explanation
Correct answer: Condensing
Quantitative Chemistry
The Mr of calcium carbonate (CaCO3) is: (Ca=40, C=12, O=16)
- 68
- 100
- 84
- 116
Show explanation
Correct answer: 100
Chemical Changes
Metals less reactive than carbon can be extracted from their oxides by:
- Distillation
- Electrolysis only
- Filtering
- Heating with carbon (reduction)
Show explanation
Correct answer: Heating with carbon (reduction)
Energy Changes
Breaking chemical bonds is:
- Not an energy change
- Always impossible
- Endothermic (takes in energy)
- Exothermic (releases energy)
Show explanation
Correct answer: Endothermic (takes in energy)
Rate & Extent of Chemical Change
A small amount of catalyst can be used because it:
- Becomes an acid
- Is not used up and can be reused
- Is destroyed each time
- Turns into product
Show explanation
Correct answer: Is not used up and can be reused
Organic Chemistry
Why is there a need to crack some of the longer fractions?
- There is more demand for shorter fractions like petrol
- There is no demand for petrol
- Short fractions are useless
- Long fractions are more useful
Show explanation
Correct answer: There is more demand for shorter fractions like petrol
Chemical Analysis
A copper compound gives a flame colour that is:
- Crimson
- Lilac
- Yellow
- Green
Show explanation
Correct answer: Green
Chemistry of the Atmosphere
Carbonates formed in the oceans built up over time to become:
- Fuels only
- Sedimentary rocks
- Metals
- Oxygen
Show explanation
Correct answer: Sedimentary rocks
Using Resources
Why is desalination not used everywhere?
- It adds salt
- It uses a lot of energy and is expensive
- It makes no water
- It is illegal
Show explanation
Correct answer: It uses a lot of energy and is expensive
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