liquid		to heat water so that the temperature is 100°C
particle		to cool water so it turns into ice
matter		the amount of space matter takes up
liquid		an extremely small piece of matter
solid		these particles smallest unit of any chemical element, they can combine to form molecules
atom		when water vapour cools down and it changes to liquid
molecule		this state has a definite form and a definite volume
gas		when ice turns into water
expand		when two or more atoms join together
combine		this state does not have a definite state or a definite volume
compress		a physical substance
freeze		to get bigger
evaporate		to push something into a smaller space
boil		a measure of how much matter there is
melt		a substance, such as water, that is not solid or a gas and that can be poured easily
condensation		to heat water so it turns into water vapour
mass		oin together to make a single thing or group
volume		although this state does not have a definite form, it does have a definite volume
element		matter with only one kind of molecule
compound		when atoms from two different elements join together