Classes of Matter.

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Presentation transcript:

Classes of Matter

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Mixtures Contain more than one type of particle Solids, liquids or gas Most common Have variable composition Two types: SOLUTIONS AND MECHANICAL MIXTURES

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Solutions At least two types of particles Particles uniformly scattered (can’t tell one particle from the other) Separation techniques: distillation, evaporation Eg. Perfume, coffee, alloys (2 or more metals such as bronze, stainless steel)

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Mechanical Mixtures At least two types of particles Particles NOT uniformly scattered (can tell one from the other) Separation techniques: filtration, evaporation Eg. Soil, pizza, orange juice with pulp

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Pure Substances Contains only one type of atom or molecule Can be natural (cotton) or synthetic (polyester)

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Elements One type of particle (atom) 118 different kinds (see periodic table) Includes diatomic atoms (O2, N2, H2, etc.)

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions

Compounds More than one type of atom Must be on the periodic table Does not include diatomic atom Eg. CO2, H2O

Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds (homogeneous) Compounds (heterogeneous) Solutions