GasesGasesG410: Gases – Boyle’s LawG430: Pressure and Temperature – The Collapsing CanG440: Evaporation and Expansion – The Drinking BirdG450: Effusion – Relative Effusion Rates of H2, He, and O2G460: Charle's LawG420: Graham’s Law of Diffusion – NH3 and HCl Diffusion