Vocabulary Word Definition Picture

Evidence

Indication that an event has occurred.

Substance

Elements or compounds that can only be separated or combined to make substances with new properties by means of a chemical reaction.

Chemical Reaction

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

Precipitate

A solid that is deposited from a solution.

Chemical Reactions – Read pages 29-36

Vocabulary Word Definition Picture

Endothermic

A process that absorbs heat.

Exothermic

A process that releases heat.

Chemical Equation

Chemical formulas and symbols written to represent a reaction.

Reactants

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

Chemical Reactions – Read pages 29-36

Vocabulary Word Definition Picture

Products

A substance produced during a chemical reaction.

Chemical Reactions – Read pages 29-36