200
A ________ reaction occurs when chemicals join or break apart to form new chemicals.
A ________ change is one that does not involve any new chemicals being made and is reversible.
During a reaction chemicals may split up or _________.
When new substances are formed during a chemical reaction this is a permanent or ____________ change.
A ________ is a chemical that join together with another chemical to form a new substance.
A _______ is a new chemical formed in a chemical reaction.
A ____ is anything that stores energy that can be converted into heat energy.
The scientific word for burning is __________.
_________ is when stone or metal reacts with chemicals in the air or water and it is worn away.
The test for carbon dioxide is if it is mixed with _________ the liquid turns milky.