Unit 2 Vocabulary

A number written below and to the right of an atomic symbol in a chemical formula that shows the number of a specific type of atom present.

• Coefficient

• Subscript

• Superscript

A shorthand notation that uses chemical symbols and numbers as subscripts to represents the type and number of atoms that are present in the smallest unit of substance.

• Chemical Formula

• Chemical Equation

Chemical Reaction

• The process by which one or more substances change to produce one or more different substances.

• Chemical formulas and symbols written to represent a reaction.

Precipitate

• A solid that is deposited from a solution

• A process that absorbs heat

• A process that releases heat

Chemical formulas and symbols written to represent a reaction.

• Chemical Reaction

• Chemical Equation

• Chemical Formula

A substance that takes part in and undergoes change during a reaction.

• Reactants

• Products

Substances produced during chemical reactions

• Reactants

• Products