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.
- 2,983questions
- 108topics
- 41exams covered
- Freeno plans or paywalls
Pick an area
Where do you want to start?
- 1,385 questions · 47 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.Solutions · States of matter · Mole concept
- 1,164 questions · 41 topicsOrganic chemistryCarbon compounds, their groups and reactions.Chemical Energetics, Equilibrium and Organic Chemistry · Physical and inorganic chemistry · General and Organic Chemistry
- 434 questions · 20 topicsAtoms and bondingAtomic structure, the periodic table and how atoms bond.Rates, Bonding and Quantities · Atomic Structure, Periodic Properties and Chemical Bonding · Qualitative Analysis, Chemical Bonding and Periodic Trends
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Solutions
117 questions across 7 exams
States of matter
111 questions across 8 exams
Mole concept
108 questions across 7 exams
Mole Calculations
104 questions across 3 exams
Chemical Energetics, Equilibrium and Organic Chemistry
96 questions across 1 exam
Physical Chemistry: Moles, Solutions and Stoichiometry
74 questions across 2 exams
Physical and inorganic chemistry
70 questions across 1 exam
Electrochemistry
60 questions across 4 exams
Try one now
Real questions, worked answers.
- Solutions · JEE Main3 mol of a solute is dissolved to make 1 L of solution. What is the molarity (in mol/L)?See the answer and explanation →
- 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 →
- Mole concept · NEET UGWhat is the molar mass (in g/mol) of NaOH? (H = 1, C = 12, N = 14, O = 16, Na = 23, S = 32, Ca = 40)See the answer and explanation →
Practise it for real.
Timed mock tests
- Abitur Chemistry Practice Test 138 questions · 45 min
- AP Chemistry Practice Test 126 questions · 40 min
- Cambridge A-Level Chemistry Practice Test 130 questions · 45 min
- Cambridge IGCSE Chemistry Practice Test 130 questions · 45 min
- CBSE Class 12 Chemistry Practice Test 130 questions · 45 min
- EmSAT Achieve Physics and Chemistry Practice Test 430 questions · 60 min
Chemistry in your exam.
JEE Main234NEET UG233Medical University Entrance Examination (Bulgaria)165Higher Secondary Certificate Examination (Bangladesh)105Medical College Admission Test (Bangladesh)105WBJEE103ECAT Pakistan103Toelatingsexamen Arts & Tandarts België (Medical & Dental Entrance Exam)100Qatar Senior Secondary Certificate (Thanaweya)96JEE Advanced96MCAT (Medical College Admission Test)90Saudi Secondary School Certificate86CBSE Class 1284HKDSE (Hong Kong)83General Secondary Certificate (Tawjihiya Kuwait)82Wazari Exam (Iraq Baccalaureate) - Scientific Branch77Tahsili SAAT (Saudi Arabia)75MDCAT Pakistan72General Education Diploma (GED Oman)71Scottish Highers69EJU Japan69A-Level UK (AQA, Edexcel, OCR)66Victorian VCE61EmSAT Achieve (UAE)52Tawjihi (General Secondary)46Tawjihiya Bahrain (Secondary School Certificate)45Cambridge IGCSE45IOE Engineering Entrance Examination (Tribhuvan University, Nepal)45Cambridge A-Level44UK GCSE43IB Diploma43German Abitur38New Zealand Scholarship35Unified Tertiary Matriculation Examination35Medical Entrance Exam (University of Iceland)33Kenya KCSE29Bagrut (Secondary School Matriculation)29Leaving Cert Ireland28AP (Advanced Placement)26ESAT (Engineering and Science Admissions Test)22CSAT Suneung20
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 JEE Main, NEET UG, Medical University Entrance Examination (Bulgaria), Higher Secondary Certificate Examination (Bangladesh), Medical College Admission Test (Bangladesh), WBJEE and more. There are 2,983 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.