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Mixtures of Matter

Mixtures of Matter. Mixtures. A combination of two or more pure substances Each pure substance retains its individual chemical properties. Question Time. What are some examples of mixtures? What is the difference between Chicken noodle soup mixture and vinegar mixture?

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Mixtures of Matter

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  1. Mixtures of Matter

  2. Mixtures • A combination of two or more pure substances • Each pure substance retains its individual chemical properties

  3. Question Time • What are some examples of mixtures? • What is the difference between Chicken noodle soup mixture and vinegar mixture? • What science prefix would we use for each? 3

  4. Types of Mixtures • Heterogeneous (hetero = different) • Does not have uniform composition • individual substances remain distinct • Homogenous (homo = same) • Has uniform composition throughout • always has a single phase • Also called a solution

  5. Question time • Can we have mixtures of metal? • What are some examples? What do we call these metals? 5

  6. Solid-solid solution (Alloy) • A homogeneous mixture • A type of solid- solid solution is called an alloy • Brass is an example of an alloy made of zinc and copper + = Brass

  7. Question Time • What is a mixture? • What are the two types of mixtures • What is the difference between a homogenous and a heterogeneous mixture? • What is a solid-solid homogeneous mixture called?

  8. Question Time State whether it is homogeneous or heterogeneous mixture • Orange juice with pulp • Raisin muffin • Steel • Salt water solution • Paper towel • Mustard

  9. Question Time • What do we do to water to get impurities out? 9

  10. Separating Mixtures • Filtration – separates heterogeneous mixtures of solids and liquids • Distillation – separates homogenous liquid-liquid mixtures using differences in boiling point distillation filtration

  11. Crystallization - produces a pure solid of a substance from a solution that contains a dissolved substance. Separates a dissolved solid • Chromatography – separates components of mixtures on the basis of the tendency to travel or be drawn across the surface of another material. Separates a liquid-liquid mixture Crystallization Chromatography

  12. Question Time • How would you separate sand from water? • How you separate alcohol from water? (They have different boiling points) • How would you separate sugar dissolved in water? • How would you separate a mixture of ink?

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