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10 Cards in this Set
- Front
- Back
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Physical change |
A change that alters the form or appearance of a material but does not make the material into another substance. |
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Chemical change |
A change in which one or more substances combine or break apart to form new substances. |
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Reactant |
A substance that enters into a chemical reaction. |
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Product |
A substance formed as a result of a chemical reaction. |
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Exothermic Reaction |
A reaction that releases energy,usually in the form of heat. |
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Endothermic Reaction |
A reaction that absorbs energy. |
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Chemical Equation |
A short,easy way to show a chemical reaction,using symbols. |
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Matter |
Anything that has mass and takes up space. |
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Law of Conversation of Mass |
The principle that the total amount of matter is neither created or destroyed during any chemical or physical change |
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Coefficient |
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. |
