11 terms

Science Ms OConnell/ Mrs Ladd


Terms in this set (...)

basic unit of matter
A group of atoms bonded together
A pure substance made of only one kind of atom
change of state
a physical change of a substance from one state to another
physical change
A change in a substance that does not change its identity
A combination of two or more substances that are not chemically combined
physical property
a trait that describes something by itself
chemical property
A characteristic of a pure substance that describes its ability to change into different substances
chemical reaction
(chemistry) a process in which one or more substances are changed into others
A substance made up of atoms of two or more different elements joined by chemical bonds
law of conservation of mass
Matter is not created nor destroyed in any chemical or physical change