IB Physics B.3 Gas Laws Key Definitions

The ideal gas law is the equation of state of a hypothetical ideal gas which relates the pressure, volume, temperature, and amount of substance in a gas.

Internal energy is the sum of kinetic energy and potential energy of a substance and is the result of the motion of the particles which make up the substance.

A mole is defined as the amount of substance containing as many particles (atoms, molecules, etc.) as there are atoms in 12 grams of carbon-12.

Momentum is a measure of how difficult it is to stop a moving object. It depends on two factors: the object's mass and its velocity.

Pressure is the force applied per unit area.