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Atomic Theory (# 2)


Vocabulary WordDefinition
Conservation of Mass Mass is never created or destroyed
Compound 2 Different elements chemically combined
Molecule A group of atoms bonded together
Covalent Compound 2 non-metals
Ionic 2 metals
Lewis Dot Structure Shows compounds forming using valence electrons
Substance Matter that has the same fixed composition & properties
Precipitate When some solutions are mixed, a chemical reaction occurs, forming a solid; the precipitate is this solid (in other words the result of a chemical change)
Solvent The substance that dissolves the solute
Solution Another name for a homogeneous mixture
Solute The substance that dissolves or seems to disappear
Heterogeneous Mixture A type of mixture where the substances are not mixed evenly
Homogeneous Mixture Two or more substances that are evenly mixed on a molecular level but are still not bonded together.
Physical Change The form or appearance of matter changes
Vaporization When a liquid changes into a gas
Condensation Reverse of Vaporization, gas changing into liquid
Sublimation When a solid changes directly into a gas
Deposition When a gas changes into a solid
Chemical Change Substances are changed into different substances
Created by: Karina_Vallejoo