IB Physics Sub-topic B3 Definitions

This page contains our IB Physics definitions for sub-topic B3. By learning each one of these definitions, you will fully cover the content for IB Physics 'Gas laws'.
Avogadro's number

It is the number of particles (6.022 x 1023) in one mole of a substance

ideal gas

It is a gas that follows the gas laws

molar mass

The mass of one mole of atoms, expressed as M and measured in g/mol

mole

It is the amount of a substance in terms of the number of particles

pressure

It is the force per unit area of container wall

Great Work!

You have now covered all of our topic 2 definitions for IB physics.
Now that you have completed these IB physics topic 2 definitions, dive into our topic 2 videos for the IB physics course.
IB physics topic 2 videos

Explored IB Physics?

Get stuck into one of our other subjects!
Join 85,000 students, across 130+ countries, in 500+ IB schools. That's half of the IB science graduates worldwide.
Start a 7d free trial