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.
- 143questions
- 10topics
- 2exams covered
- Freeno plans or paywalls
Chemistry in Belgium
Practise chemistry with the exams you can take in Belgium.
Where do you want to start?
- 63 questions · 5 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.Acid-Base Equilibria, Electrochemistry, and Metabolic Integration · States of matter · Mole concept
- 40 questions · 2 topicsOrganic chemistryCarbon compounds, their groups and reactions.Organic Reaction Mechanisms, Stereochemistry, and Biomolecules · Organic chemistry basics
- 40 questions · 3 topicsAtoms and bondingAtomic structure, the periodic table and how atoms bond.General Chemistry, Atomic Structure, Stoichiometry, and Thermochemistry · Periodic properties · Chemical bonding
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Organic Reaction Mechanisms, Stereochemistry, and Biomolecules
35 questions across 1 exam
General Chemistry, Atomic Structure, Stoichiometry, and Thermochemistry
35 questions across 1 exam
Acid-Base Equilibria, Electrochemistry, and Metabolic Integration
30 questions across 1 exam
States of matter
16 questions across 1 exam
Mole concept
9 questions across 1 exam
Equilibrium and kinetics
5 questions across 1 exam
Organic chemistry basics
5 questions across 1 exam
Redox reactions
3 questions across 1 exam
Real questions, worked answers.
- Organic Reaction Mechanisms, Stereochemistry, and Biomolecules · Toelatingsexamen Arts & Tandarts België (Medical & Dental Entrance Exam)Which reaction conditions favor an SN2 nucleophilic substitution mechanism over an SN1 mechanism?See the answer and explanation →
- General Chemistry, Atomic Structure, Stoichiometry, and Thermochemistry · Toelatingsexamen Arts & Tandarts België (Medical & Dental Entrance Exam)What is the correct ground-state electron configuration of a neutral copper atom (Z = 29)?See the answer and explanation →
- Acid-Base Equilibria, Electrochemistry, and Metabolic Integration · Toelatingsexamen Arts & Tandarts België (Medical & Dental Entrance Exam)What is the conjugate base of the dihydrogen phosphate anion (H2PO4-) according to the Brønsted-Lowry definition?See the answer and explanation →
Practise it for real.
Chemistry in your exam.
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 Toelatingsexamen Arts & Tandarts België (Medical & Dental Entrance Exam), IB Diploma. There are 143 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.