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Classification of

Classification of. Matter. Classification of Matter. Matter can be divided into pure and impure particle arrangement- A pure substance is anything that contains only one type of matter, so it is ‘all the same’

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Classification of

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  1. Classification of Matter

  2. Classification of Matter Matter can be divided into pure and impure particle arrangement- • A pure substance is anything that contains only one type of matter, so it is ‘all the same’ • A mixture is physical blend of two or more substances that are not chemically combined, so it is ‘something and something else’

  3. Classification of Matter • Element • The simplest forms of matter. • Composed of identical atoms • Located on the periodic table • ex: copper wire, aluminum foil So, is an element a pure substance or a mixture?

  4. Classification of Matter • Compound • composed of 2 or more elements in a fixed ratio • properties differ from those of individual elements • EX: table salt (NaCl), water (H2O) So, is this salt a pure substance or a mixture?

  5. Classification of Matter A mixture is a combination of two or more substances in which the substances retain their distinct identities. • Homogenous mixture – composition of the mixture is the same throughout. Can be separated by physical means • Heterogeneous mixture – composition is not uniform throughout. Can be separated by physical means So, is a pure substance and a mixture the same thing?

  6. Classification of Matter Determine if each drawing represents a mixture, a compound, or an element.

  7. Classification of Matter magnet Physical means can be used to separate a heterogeneous mixture into its pure components. • Distillation Used to separate a liquid from a soluble solid or two liquids with very different boiling points. • Filtration Used to separate an insoluble solid from a liquid • Crystallization separation that results in pure solid particles • Chromatography – separates bases on the mobile phases tendency to travel across the surface of a material

  8. Separation of Mixtures a. • Filtration • Distillation • Chromatography • Chromatography

  9. Matter Flowchart MIXTURE PURE SUBSTANCE yes Is the composition uniform? no MATTER no yes Can it be physically separated? yes Can it be chemically decomposed? no Compound Element Heterogeneous Mixture Homogeneous Mixture (Solution)

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