What require activation energy to get started?
changing colors chemical additions reacting colors Firecrackers an engine heating liquids Organic compounds chemical changes
A B C D E F G H
Chemical changes are referred to as a chemical reaction.
Chemical changes require activation energy to get started
What require activation energy to get started? (A) changing colors (B) chemical additions (C) reacting colors (D) Firecrackers (E) an engine (F) heating liquids (G) Organic compounds (H) chemical changes