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.
- 77questions
- 4topics
- 1exams covered
- Freeno plans or paywalls
Chemistry in Iraq
Practise chemistry with the exams you can take in Iraq.
Where do you want to start?
- 39 questions · 2 topicsOrganic chemistryCarbon compounds, their groups and reactions.Equilibrium, Acids, Electrochemistry and Organic Chemistry · Atoms, bonding and organic chemistry
- 38 questions · 2 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.Acids, equilibrium and electrochemistry · Moles, stoichiometry and solutions
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Equilibrium, Acids, Electrochemistry and Organic Chemistry
28 questions across 1 exam
Acids, equilibrium and electrochemistry
22 questions across 1 exam
Moles, stoichiometry and solutions
16 questions across 1 exam
Atoms, bonding and organic chemistry
11 questions across 1 exam
Real questions, worked answers.
- Equilibrium, Acids, Electrochemistry and Organic Chemistry · Wazari Exam (Iraq Baccalaureate) - Scientific BranchWhat is the pH of a 0.01 mol/L solution of hydrochloric acid?See the answer and explanation →
- Acids, equilibrium and electrochemistry · Wazari Exam (Iraq Baccalaureate) - Scientific BranchWhat is the pH of a 10 -2 mol/L solution of hydrochloric acid at 25 °C?See the answer and explanation →
- Moles, stoichiometry and solutions · Wazari Exam (Iraq Baccalaureate) - Scientific BranchHow many moles are there in 22 g of CO₂? (Relative atomic masses: H = 1, C = 12, N = 14, O = 16, Na = 23, Mg = 24, Al = 27, S = 32, Cl = 35.5, K = 39,…See the answer and explanation →
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 Wazari Exam (Iraq Baccalaureate) - Scientific Branch. There are 77 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.