Chemistry Ch 12

Kinetic Molecular Theory

Described the behavior of gases in terms of particles in motion; makes several assumptions about size, motion, and energy of gas partials.

Viscosity

Liquid resistance to flow
the resistance of a liquid to flow, affected by the size and shape of particles, and generally increases as the temperature decreases and as intermolecular force increase.

elastic collision

Collison when there is no loss of total kinetic energy. Kinetic energy can be transferred between the colliding particles, but the total kinetic energy of the particles remain the same.

freezing point

The temperature at which a liquid changes into a (crystalline) solid

Melting point

for a crystalline solid, the temperature at which the forces holding a crystal lattice together are broken and it becomes a liquid

lattice

Regular arrangement of particles.

Pressure

force applied per unit area

surface tension

the energy required to increase the surface area of a liquid by a given amount; results from an even distribution of attractive forces.

Evaporation

the process in which vaporization occurs only at the surface of a liquid

Temperature

a measure of the average kinetic energy of the particles in a sample of matter

Heat

a form of energy that flows from a warmer object to a cooler object

Vaporization

The energy-requiring process by which a liquid changes to a gas or vapor.

manometer

instrument to measure pressure

Hydrophilic

Attracted to water

Hydrophobic

Isn't attracted to water