Chemical Reactions Vocab

Front

New substance formed in a chemical reaction

Back

product

Front

Substance before a chemical reaction that changes during the reaction.

Back

reactant

Front

A process where new substances form from others.

Back

chemical reaction

Front

Shorthand notation of arrows and formulas summarizing a chemical reaction.

Back

chemical equation

Front

Scientific law: matter cannot be created or destroyed

Back

The Law of Conservation of Matter

Front

A reaction that releases more energy than it absorbs.

Back

exothermic reaction

Front

A reaction that absorbs more energy than it releases.

Back

Endothermic reaction

Front

Change to a substance without altering its chemical structure.

Back

Physical change

Front

Arrangement of bonds and atoms in a substance

Back

chemical structure

Front

Connection between atoms in complex particles

Back

Chemical bond