Chemistry Vocabulary

matter•anything

that has mass and takes up space

physical properties• the

characteristics of a substance that can be observed or measured without changing the substance

solid• the state of

matter that has a definite shape and definite volume

liquid• the state of

matter that has a definite volume but no definite shape (liquids take the shape of their container)

gas•the state of

matter that has no definite shape or volume

mass•the amount

of matter in an object (measured using a balance)

weight• the measure

of the pull of gravity on an object (measured using a scale)

volume• the amount of

space an object takes up (measured using a graduated cylinder, beaker or flask)

density• the

concentration of matter in an object (a golf ball is more dense than a ping-pong ball)

evaporation• the process by

which a liquid changes to a gas

condensation• the process by

which a gas changes into a liquid

freezing point• the temperature

at which a substance changes from a liquid to a solid

melting point• the temperature

at which a substance changes from a solid to a liquid

boiling point• the temperature

at which a substance changes from a liquid to a gas

solubility• the ability of

one substance to be dissolved in another substance

reactivity• the ability of

a substance to go through a chemical change

combustibility• the chemical

property of being able to burn

mixture• a combination

of two or more different kinds of matter where each kind of matter keeps its own physical properties

solution• a type of mixture

where one substance dissolves in another and the particles of the two substances are evenly mixed and not easily separated