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MJHS7 Chemistry

MJHS7 Chemistry Vocabulary

Change in matter that produces a new substance Chemical change
Smallest particle of an element Atom
Combination of two or more atoms Molecule
Chemicals listed on the right of the arrow in a chemical equation Products
Chemicals listed on the left of the arrow in a chemical equation Reactants
Properties of a substance that occur when it chemically changes (reactivity, flammability) Chemical properties
Properties of a pure substance (element) that do not change (melting point, boiling point, density, color, state of matter, pH) Physical properties
Substance that cannot be broken down into any smaller substance Element
Made from two or more pure substances in the same place but not combined into a new material Mixture
Measure of the concentration of hydrogen ions (H+) in a solution pH
Electrons found in the outer shell of an atom Valence electrons
Substance made of two or more elements chemically combined in a specific ratio Compound
Chart containing the elements found on Earth; arranged in periods (rows) and groups/families (columns) Periodic table of the elements
Change that alters the form or appearance of a material but does not make the material into a new substance Physical change
Created by: aaron.blake



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