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Chemical Reactions

7th Grade

TermDefinition
substance something that is made of all the same atoms or groups of atoms
property something that can be observed about a substance, such as color, smell, or boiling point
scale the relative size of things
molecule a group of atoms joined together in a particular way
atoms the tiny pieces that all matter—all the stuff in the world—is made of
chemical formula letters and numbers showing the types and number of atoms that repeat to make up a substance
Created by: user-1630527
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