Vocabulary 9 -Chemical Changes

Physica change: a change in size, shape, or state, without forming a new substance.

Chemical change: a change in matter that produce a new substance with different properties from the original.

Chemical reaction: a chemical change of original substance nto one or  more new substances.

reactant: one of  the original substance before a chemical reaction takes place.

product: one of the new substances produced when a chemical reaction takes place.