Solid

The state of matter that has a definite shape

liquid

The state of matter that has a definite volume but no definite shape

gas

The state of  matter that does not have a definite shape or volume

density

The amount of matter in an object compared to the space it takes up

matter

Anything that has mass and takes up space

mass

The amount of matter in an object

volume

The amount of space an object takes up

buoyancy

Materials that have buoyancy are able to float in a liquid or gas.