Unit 2: Properties & Changes in Matter VOCAB

Front

atom

Back

basic unit of matter

Front

molecule

Back

two or more atoms joined by chemical bonds

Front

solid

Back

particles packed together, minimal movement

Front

liquid

Back

particles close, move past each other

Front

gas

Back

particles far apart, no contact

Front

kinetic energy

Back

energy of motion

Front

density

Back

characteristic property of matter that describes how much space it takes up compared to how much matter it contains

Front

pure substance

Back

one type of particle throughout

Front

homogeneous mixture

Back

evenly mixed substances

Front

heterogeneous mixture

Back

easily identifiable parts