Unit 2 - Solids, Liquids and Gases

solid

particles stuck together

they vibrate

there is a definate shape and volume

liquid

particles roll around each other

the particles roll

it has no definate shape but a definate volume

gas

Indefinite shape

Indefinite volume

Molecules are NOT attached

Move fast filling available space

Freezing

Change of state from liquid to solid thermal energy decreased

Vaporization

Change of state from liquid to gas thermal energy increased

evaporation

vaporization only on the surface of a liquid

boiling

vaporization below the surface of a liquid

condensation

gas becomes liquid

thermal energy decreased

sublimination

solid becomes a gas

thermal energy added

Melting

The change in state from a solid to a liquid

kinetic energy

the energy an object has due to its motion

thermal energy

Heat energy

particles

extremely small units of matter