Structure 1. Models of the particulate nature of matter

Structure 1.1—Introduction to the particulate nature of matter (SL/HL)

Structure 1.2—The nuclear atom

1.3—Electron configurations

Structure 1.4—Counting particles by mass: The mole.

Structure 1.5—Ideal gases

Structure 1.5.1—An ideal gas consists of moving particles with negligible volume and no intermolecular forces. All collisions between particles are considered elastic.

Structure 1.5.2—Real gases deviate from the ideal gas model, particularly at low temperature and high pressure.

Structure 1.5.3—The molar volume of an ideal gas is a constant at a specific temperature and pressure.

Structure 1.5.4—The relationship between the pressure, volume, temperature and amount of an ideal gas is shown in the ideal gas equation PV = nRT and the combined gas law

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