Chemistry Gas Quiz 1

Temperature

A measure of the average kinetic energy of particles

Standard Temperature

0C (273K)

Pressure

The force per unit area on a surface

Standard Pressure

1 atm (101.3 kPa) (760 mmHg) (760 torr)

Absolute Zero

The theoretical temperature where the motion of particles cease, would have no kinetic energy

STP

Standard Temperature and Pressure

Gas Laws

The simplest mathematical relationships between the volume, temperature, pressure and amount of a gas

Boyle’s Law

The volume of a fixed mass of gas varies inversely with the pressure at constant temperature (P1*V1 = P2*V2)

Charles’s Law

The volume of a fixed mass of gas at constant pressure varies directly with the kelvin temperature (V1/T1 = V2/T2)

Gay-Lussac’s Law

The pressure of a fixed mass of gas at constant volume varies directly with the kelvin temperature (P1/T1 = P2/T2)

The Combined Gas Law

Describes the relationship among the pressure, temperature, and volume of an enclosed gas ((P1*V1)/T1 = (P2*V2)/T2)

Avogadro’s Law

Equal volumes of gases at the same temperature ad pressure contain equal numbers of molecules (22.4L)

Molar Volume

1 mole of a gas at STP = 22.4 L

large numbers of tiny particles that are far apart

Gases consist of…

elastic collisions

Collisions between gas particles and between particles and container walls are…

no net loss

Elastic collisions have _______ of kinetic energy

continuous

Gas particles are in _____ motion

no forces

There are _ __ of attraction or repulsion between gas particles

average kinetic energy

The ____ of gas particles depends on the temperature of the gas