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Mixtures of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter. Classification of Matter.
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Substance Matter that has a uniform and unchanging composition
Mixture Combination of 2 or more pure substances They are physically mixed but, don’t react
Heterogeneous Does not blend smoothly and individual substances remain distinct Sand and water; orange juice; pizza
Homogeneous Mixture Constant composition throughout Homogenous Mixture - Is a single phase AKA - Solution Salt water
Two types of pure substances: Elements Compounds
Element: A pure substance that cannot be separated into simpler substances by chemical or physical means Found on periodic table 91 naturally occurring, the rest man made
Compound: Combination of two or more elements 1 Million compounds and 100,000 more found every year. Water; hydrogen peroxide
Has mass and volume (s, l, g) One type of matter More than one type of matter Uniform throughout (solutions) Not uniform throughout Two or more elements One type of atom
Separating Mixtures Reverse of Mixing Helps to understand matter Use physical processes used to separate solutions
Filtration -Technique that uses a porous barrier to separate a solid from a liquid. -Separate heterogeneous mixtures composed of solids and liquids.
Distillation -Separation technique based on differences on boiling points. -Separates a liquid from a liquid.
Crystallization formation of pure solid particles from a solution
Chromatography Separates on tendency of chemical to travel.
Separation of Pure Substances • Requires chemical means