8th Grade Science Vocab List 2_ECM

Front

Smallest unit of matter

Back

atom

Front

2 or more atoms chemically combined

Back

molecule

Front

Substance where all atoms/molecules are identical

Back

pure substance

Front

Simplest pure substance made of one type of atom, cannot be broken down.

Back

Element

Front

2+ different elements, chemically combined

Back

compound

Front

2+ elements/compounds physically combined

Back

mixture

Front

Contains all elements arranged by atomic number

Back

Periodic table of elements

Front

Uniform mixture throughout

Back

homogenous mixture

Front

A mixture that is not uniform and shows distinct substances.

Back

Heterogenous mixture

Front

Milk is a:

Back

Homogenous mixture.