Pure+Substances

=Pure Substances No Excuse Spelling Word Wall=



**Matter is any material that takes up space and has mass.** **Matter can be solid, liquid, or gas.**

**Properties describe the characteristics of matter.**

**Every material has its own set of properties.** **Homogeneous matter is described using one set of properties.**

**Heterogeneous (Mechanical Mixture) matter is described using more than one set of properties.**

**A homogeneous mixture or __solution__ is a mixture that appears the same all over -- the different materials are not visible.** **A pure substance is any material made up of only one kind of extremely small particle (either an atom or a molecule).** **A** __solute__ **dissolves in a** __solvent__ **to form a** __solution.__ **Factors affecting dissolving: temperature, stirring, particle size, pressure.** = = = = = =

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