molecules

Front

Atom

Back

the basic building block of matter

Front

Element

Back

A substance consisting of a single type of atom

Front

molecule

Back

made up of two or more atoms bonded together (may be the same or different elements)

Front

compound

Back

chemical substance formed when two or more different elements bond together

Front

chemical formula

Back

the recipe for a chemical substance

Front

Subscript

Back

the small number that indicates the number of atoms of an element in a formula

Front

coefficient

Back

the number in from of the formula that indicates the number of molecules

Front

pure substance

Back

can be either an element or compound that has a definite and constant composition

Front

mixture

Back

simple combination of materials, not in a set ratio, not chemically combined