MS-PS1-5: Definitions, Key Concepts & Examples

Front

Law of Conservation of Mass

Back

Mass is conserved in chemical reactions.

Front

Atoms in Reactions

Back

Total number of atoms remains constant.

Front

Chemical Equation

Back

Represents a chemical reaction.

Front

Reactants

Back

Substances before a reaction.

Front

Products

Back

Substances after a reaction.

Front

Balanced Equation

Back

Equal number of each type of atom.

Front

Subscript in Chemistry

Back

Indicates number of atoms in a molecule.

Front

Coefficient in Chemistry

Back

Indicates number of molecules.

Front

Molecule

Back

Two or more atoms bonded together.

Front

Element

Back

Pure substance of one type of atom.