II. Classification of Matter

II. Classification of Matter

Matter Classification Matter Flowchart Pure Substances Mixtures A. Matter Flowchart MATTER yes MIXTURE yes

Is the composition uniform? Homogeneous Mixture (solution) PURE SUBSTANCE no Heterogeneous

Mixture Colloids no Can it be physically separated? yes

Can it be chemically decomposed? Compound Suspensions no Element

A. Matter Flowchart Examples: graphite element pepper hetero. mixture

sugar (sucrose) compound paint hetero. mixture soda solution

B. Pure Substances Element composed of identical atoms EX: copper wire, aluminum foil B. Pure Substances Compound composed of 2 or more

elements in a fixed ratio properties differ from those of individual elements EX: table salt (NaCl) B. Pure Substances For example Two different compounds, each has a definite composition.

C. Mixtures Variable combination of 2 or more pure substances. Heterogeneous Homogeneous Tyndall Effect Disperses Light

C. Mixtures Solution homogeneous very small particles No Tyndall effect particles dont settle EX: rubbing alcohol Tyndall Effect

C. Mixtures Colloid heterogeneous medium-sized particles Tyndall effect particles dont settle EX: milk C. Mixtures

Suspension heterogeneous large particles particles settle EX: fresh-squeezed lemonade C. Mixtures Examples:

mayonnaise colloid muddy water suspension fog colloid

saltwater solution Italian salad dressing suspension

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