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Matter Vocabulary
10-16-13 vocab
8
Science
8th Grade
10/16/2013

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Term
Physical Change
Definition
a change that alters the form or the appearance of matter, but doesn't change its chemical composition
Term
Chemical Change
Definition
a change in matter that produces one or more new substances
Term
Law of Conservation of Mass
Definition
matter is not created or destroyed in any chemical or physical change
Term
Temperature
Definition
a measure of how hot or cold something is
Term
Thermal Energy
Definition
the total energy of the motion of all the particles in an object
Term
Endothermic Change
Definition
a change in which energy is absorbed
Term
Exothermic Change
Definition
releases energy
Term
Chemical Energy
Definition
energy stored in the chemical bonds between atoms
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