Unit 7 - Gasses

Properties of Solids

Shape: Definite, Volume: Definite, Energy: Low

Properties of Liquids

Shape: Indefinite, Volume: Definite, Energy: Medium

Properties of Gasses

Shape: Indefinite, Volume: Indefinite, Energy: High

Gas particles

Small, hard spheres with insignificant volume

The motion of gas particles

Rapid, constant, and random

Gas particle collisions

Elastic so no energy is lost

Standard pressure

1 atm

Standard Temperature

273 K

What to use when measuring gas

Moles, pressure, temperature, and volume

Volume, V

Liters (also see as mL)

Temperature, T

Kelvin (also seen as C)

Pressure, P

atm (also seen as mmHg, kPa, and torr)

Charles’ Law

Measured with Volume and temperature and is directly proportional.

Boyle’s Law

Mesures with pressure and volume and is indirectly proportional.

Gay-Lussac’s Law

Measures with pressure and temperature and is directly proportional.