Report an issue

FeaturesSubjectsPricing Schools

Loading subject…

A.1 Kinematics

A.2 Forces and momentum

A.3 Work, energy and power

A.4 Rigid body mechanics (HL only)

A.5 Galilean and special relativity (HL only)

B.1 Thermal energy transfers

B.2 Greenhouse effect

B.3 Gas laws

B.4 Thermodynamics (HL only)

B.5 Current and circuits

C.1 Simple harmonic motion

C.2 Wave model

C.3 Wave phenomena

C.4 Standing waves and resonance

C.5 Doppler effect

D.1 Gravitational fields

D.2 Electric and magnetic fields

D.3 Motion in electromagnetic fields

D.4 Induction (HL only)

E.1 Structure of the atom

E.2 Quantum physics (HL only)

E.3 Radioactive decay

E.4 Fission

E.5 Fusion and stars

B.3.1 Kinetic theory and gas behavior Key Definitions

IB
B.3.1 Kinetic theory and gas behavior

IB Physics B.3.1 Kinetic Theory and Gas Behavior Key Definitions

Key Definitions

Definition

Ideal gas law

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.

Definition

Mole

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.

Definition

Momentum

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.

Definition

Pressure

Pressure is the force applied per unit area.