Theme B: The particulate nature of matter
IB Physics B.3 Gas laws: practice questions and video explanations
Pressure, the mole and the ideal gas laws, the kinetic model of an ideal gas and how real gases differ from it.
SL and HL
What you need to know for B.3 Gas laws
- Use pressure, amount of substance and the Avogadro constant
- Apply the gas laws and the equation of state pV = nRT
- Explain pressure with the kinetic model of an ideal gas
- Relate average kinetic energy of molecules to temperature
- Describe when real gases deviate from ideal behaviour
B.3 Gas laws questions in the question bank
- Exam-style questions
- 25
- Multiple choice (Paper 1A style)
- 22
- Structured (Paper 1B and 2 style)
- 3
- Free to try
- 1
Every question has a mark scheme. Multiple-choice answers are marked instantly, and for structured questions you open the mark scheme part by part and award yourself the marks you earned. Most questions also have a step-by-step video explanation presented by an IB teacher or a former IB student.
Practising B.3 Gas laws needs Premium. Topic A (Space, time and motion) and uncertainties are free with a free account.
More from theme B: The particulate nature of matter
Full practice papers
When you have practised by topic, sit a full SL or HL mock exam with Paper 1A, Paper 1B and Paper 2, or see every IB Physics topic.