boil

a liquid is heated into bubbles of water vapor

condensation

the change from a gas into a liquid

density

the property of matter that compares an object's mass to its volume

evaporation

the change from liquid water to water vapor

freeze

when matter changes from liquid to a solid

hardness

how firm an object is

mass

the amount of matter an object contains

matter

anything that has mass (weight) and takes up space

melts

when matter changes from a solid to a liquid

mixture

the combination of two or more substances

property

something about matter that you can oserve with one of more of your senses

states of matter

the forms that matter can take

texture

how an object feels to the touch

volume

the amount of space an object takes up