Chemistry Unit Review

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Matter

There are three types of matter; Solid, Liquid, and Gas.

Heterogeneous Mixture = Any mixture that is uniform in composition.

Homogeneous Mixture = Any mixture that is not uniform in composition.

There are three types of Mechanical mixtures;

Suspension= Are Heterogeneous mixtures of a solid and a liquid in which the solid does not dissolve. Settles when left. May look Homogenous, but is Heterogeneous. ex. cake mix,

Colloid= Are mixtures with characteristics part way between a solution and a suspension. Do not settle when left. Heterogeneous. ex. mayonnaise, jello

Solution= Are mixtures made by mixing a solute and a solvent. Homogenous. ex. salt water

There are two types of Pure Substances;

Elements=

Compounds= a pure substance composed of two or more different atoms chemically bonded to one another.

Physical and Chemical Properties and Changes

Qualitative= describing the quality of something in size and appearance. ex. the petals are orange

Quantitative= measuring something in numbers. ex. 50 mph

Physical Properties=

Chemical Properties=

Physical Changes=

Chemical Changes=

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Periodic Table