Subjects
Chemistry practice, free.
Solutions, gases, the mole, equilibrium, atoms and bonding, from school and entrance exams. Every question has an explanation, and the tests are timed like the real thing.
- 332questions
- 21topics
- 7exams covered
- Freeno plans or paywalls
Chemistry in the United Kingdom
Practise chemistry with the exams you can take in the United Kingdom.
Where do you want to start?
- 125 questions · 7 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.States of matter · Mole concept · Equilibrium and kinetics
- 104 questions · 5 topicsOrganic chemistryCarbon compounds, their groups and reactions.Organic Chemistry, Equilibrium and Electrochemistry · Organic chemistry: structure and reactions · Reactions Acids Electrolysis and Organic Chemistry
- 103 questions · 9 topicsAtoms and bondingAtomic structure, the periodic table and how atoms bond.Rates, Bonding and Quantities · Bonding Structure and Quantitative Chemistry · Atomic Structure and Periodic Table
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
States of matter
51 questions across 3 exams
Rates, Bonding and Quantities
37 questions across 1 exam
Organic Chemistry, Equilibrium and Electrochemistry
32 questions across 1 exam
Mole concept
27 questions across 3 exams
Organic chemistry: structure and reactions
23 questions across 1 exam
Reactions Acids Electrolysis and Organic Chemistry
17 questions across 1 exam
Inorganic and physical chemistry
17 questions across 1 exam
Bonding Structure and Quantitative Chemistry
16 questions across 1 exam
Real questions, worked answers.
- States of matter · Cambridge IGCSEA gas at 4 atm occupies 6 L. At constant temperature, what is its pressure (in atm) when the volume is compressed to 3 L?See the answer and explanation →
- Rates, Bonding and Quantities · Scottish HighersWhat is the name given to a substance that speeds up a reaction without being used up?See the answer and explanation →
- Organic Chemistry, Equilibrium and Electrochemistry · Scottish HighersWhat is the general formula of the alkanes?See the answer and explanation →
Practise it for real.
How to practise chemistry.
- 1
Balance the equation first
Most mole and mass questions fall apart when the equation is not balanced. Do it before any numbers.
- 2
Write the units and the formula you use
Moles, grams, litres and concentration are easy to mix up. Units on every line keep you honest.
- 3
Learn trends as patterns
Periodic trends are a few rules, not a long list. Learn why they go up or down across a period and down a group.
- 4
Do a rough check
Ask whether the answer is the right size. A negative concentration or a mass larger than you started with means a slip.
- 5
Redo your mistakes after a week
Repeat the questions you got wrong after a few days. That is when a method either sticks or fades.
Questions, answered.
- Is the chemistry practice really free?
- Yes. Every question, explanation, mock test and flashcard deck is free, with no plans or paywalls.
- Which exams does it cover?
- Chemistry questions from Scottish Highers, A-Level UK (AQA, Edexcel, OCR), Cambridge IGCSE, Cambridge A-Level, UK GCSE, IB Diploma and more. There are 332 chemistry questions on this page's list today.
- Does every question have an explanation?
- Yes. Each question has an explanation with the working or the key idea, and you can open any question on its own page.
- Can I take a timed test?
- Yes. The mock tests below run on a real timer and show a full review with explanations at the end.