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Properties of Matter

Properties of Matter. Main topics of this unit. Pure substances verses mixtures Density Conductivity Thermal Energy Endothermic and Exothermic Reactions. Chemical Properties. Chemical Properties the ways a pure substance behaves when it combines with other pure substances

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Properties of Matter

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  1. Properties of Matter

  2. Main topics of this unit • Pure substances verses mixtures • Density • Conductivity • Thermal Energy • Endothermic and Exothermic Reactions

  3. Chemical Properties • Chemical Properties • the ways a pure substance behaves when it combines with other pure substances • Describe the kinds of chemical reactions a substance can undergo

  4. Pure Substances vs. Mixtures • Pure Substances • Contain only a single type of matter • Mixtures • Two or more pure substances intermingled together • Homogeneous Mixtures (also known as solutions) • The composition of the mixture is identical throughout • Heterogeneous Mixtures • The composition of the mixture is not the same throughout

  5. In flow-diagram form:

  6. Examples

  7. Separation of Mixtures • Examples to separate heterogeneous mixtures: • - Magnetic • Filtration • Examples to separate homogeneous mixtures: • Distillation • - Chromatography

  8. Separation of Mixtures by Paper Chromatography

  9. Mixtures: Homogeneous vs. Heterogeneous • Are the following mixtures homogeneous or heterogeneous? • Well-stirred mixture of food dye in water • Bee’s wax and candle wax mixed together by hand • Bee’s wax and candle wax melted together, stirred well, then allowed to solidify

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