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Week 11 Vocabulary
Physical Science
9
Science
9th Grade
12/01/2015

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Term
Concentration
Definition
A close amount of a substance usually measured by volume.
Term
Endothermic Reaction
Definition
a reaction in which energy is added in order for reaction to occur
Term
Catalyst
Definition
a substance that increases/decreases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Term
Reaction Rate
Definition
Time in which a reaction takes place depending on the amount of energy
Term
Exothermic Reaction
Definition
a reaction in which energy is released as a result
Term
Pressure
Definition
the continuous physical force exerted on or against an object by something in contact with it
Term
Temperature
Definition
the degree or intensity of heat present in a substance or object
Term
Activation Energy
Definition
The minimum amount of energy that the reactants must possess in order to undergo a reaction.
Term
Agitation
Definition
The action of briskly stirring or disturbing something, especially a liquid.
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