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Physical Science: Chapter 5, sec3

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Notes from 10/25/10

Notes from 10/25/10

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    Physical Science: Chapter 5, sec3 Physical Science: Chapter 5, sec3 Presentation Transcript

    • Physical Science Chapter 5, Section 3 Notes from 10/28/10
    • Properties of Mixtures
      • A mixture is a combination of two or more substances that are not chemically combined.
      • Each substance in a mixture keeps its identity because no chemical change happens when a mixture is made.
      Section 3 Mixtures Chapter 5
    • Properties of Mixtures ,
      • Mixtures can be separated by physical means, such as filtration, evaporation, and distillation.
      • The components of a mixture do not need to be mixed in a definite ratio.
      Section 3 Mixtures Chapter 5
    • Elements, Compounds, and Mixtures Chapter 5
    • Solutions
      • A solution appears to be a single substance, but it is actually a homogeneous mixture composed of particles of two or more substances that are distributed evenly among each other.
      • In solutions, the solute is the substance that is dissolved. The solvent is the substance in which the solute is dissolved.
      Section 3 Mixtures Chapter 5
    • Solutions , continued
      • A substance that is insoluble , or unable to dissolve, forms a mixture that is not a solution.
      • Solutions may be liquids, gases, or solids.
      • Alloys are solid solutions in which metals or nonmetals are dissolved in other metals.
      Section 3 Mixtures Chapter 5