8th Grade Physical Science Vocabulary

Front

Matter

Back

that has mass and takes up space

Front

Atom

Back

the smallest unit of an element

Front

Back

substance made of only one type of atom

Front

Compound

Back

made of two or more elements chemically combined

Front

Mixture

Back

of two or more substances not chemically combined

Front

Physical Change

Back

in form or appearance, not composition

Front

Chemical Change

Back

that produces new substances

Front

Law of Conservation of Mass

Back

is neither created nor destroyed in a chemical reaction

Front

Reactants

Back

present before a chemical reaction

Front

Products

Back

formed by a chemical reaction