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The part of a solution in the largest amount and that dissolves other substances. EX: Acids


The part of a solution present in the lesser amount and that dissolved by a solvent. EX: Sugar


That which has mass and occupies space.
EX: Water


A mixture of two or more substances, which may be solids, liquids, gases, or a combination of these.
EX: Air

Chemical Formula

A representation of a substance using symbols for its elements. EX. CH4

Chemical Equation

Group of symbols representing a chemical reaction.
Ex. 2HCl + 2Na -> 2NaCl + H2

Chemical Property

A property used to characterize materials in reactions that change their identity. EX: Flammability

Chemical Reaction

A process in which one or more substances are changed into others. EX: Burning Wood


The smallest part of an Element EX: H, He, Li, Be (periodic table of elements)


The combination of 2 or more atoms EX: H2O


A substance made of two or more elements chemically combined in a specific ratio, or proportion. Ex. Water


One of the extremely small constituents of matter, as an atom or nucleus. EX: Electron, proton

Ionic Compound

Attractions between two oppositely charged ions. Ex: salt, baking powder

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