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7th Grade Unit 7

Chemical Reactions

Definition
Property Something that can be observed about a substance, such as color, smell, or boiling point
Melting Point The temperature at which a substance changes from the solid phase to the liquid phase
Boiling Point The temperature at which a substance changes from the liquid phase to the gas phase
Scale The relative size of things
Atoms The tiny pieces that all matter- all the stuff in the world- is made of
Substance Something that is made of all the same atoms or groups of atoms
Model An object, diagram, or computer program that helps us understand something by making it simpler or easier to see
Reactant A starting substance that is part of a chemical reaction
Product An ending substance that is made during a chemical reaction
Chemical Reaction A process in which atoms rearrange to form new substances
Rearrange To change the order or position of something
Created by: user-2013070
 

 



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