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Chemical Reactions

Across
A characteristic of a substance that describes it ability to change into other substances
Matter can enter and leave as it pleases
A rapid reaction between oxygen and a substance called fuel.
Matter is not allowed to leave nor enter
is anything that takes up space and has mass
Breaks down chemicals into smaller products
The energy is being released inside
The minimum amount of energy required to start a chemical reaction
Matter is not created or destroyed during a chemical reaction
Each ____ only affects one chemical reaction (your body has a lot of these)
Is the amount of a substance in a given volume
When two or more elements or compounds combine to make a more complex substance
When the reaction is complete you have a new ______
A material used to slow down reactions
Down
A characteristic of a substance that can be observed without changing the substance into another substance
A solid that forms from solution during a chemical reaction
A reaction that releases energy in the form of heat
A material that releases energy when it burns
The study of matter and how it changes
A change in matter that produces one or more new substance
When two elements trade places, or a compound and an element switch places
The substances you have at the beginning of a reaction
A material that increases the rate of reaction by lowering the activation energy