Matter Vocab

Solid

Definite shape and volume

liquid

Definite volume, no definite shape

Gas

No definite shape or volume

Mass

the amount of matter in an object

Weight

A measure of the force of gravity on an object

Density

mass/volume

Volume

The amount of space an object takes up

expand

increase in size

Contract

decrease in size

Atom

Smallest particle of an element

Molecule

A group of atoms bonded together

Condensing

The change of state from a gas to a liquid

Freezing

The change of state from a liquid to a solid

evaporate

the change from a liquid to a gas

Heat

the transfer of thermal energy

Matter

Anything that has mass and takes up space

Thermal energy

energy contained within a system that is responsible for its temperature

Phase change

a change from one state (solid or liquid or gas) to another

boiling point

The temperature at which a liquid changes to a gas

Melting point

The temperature at which a solid becomes a liquid

Freezing point

The temperature at which a liquid changes into a solid

Thermal Equilibrium

two substances in contact with each other reach the same temperature

Sublimation

solid to gas

deposition

gas to solid

Endothermic

Absorbs heat

Melting

The change from a solid to a liquid