<ul><li>Notes: Mixtures </li></ul><ul><li>CW: Substances vs Mixtures </li></ul><ul><li>H: More about Mixtures </li></ul>
Mixtures November 12, 2008
Objectives <ul><li>Describe the properties of mixtures </li></ul><ul><li>Compare a mixture to a substance </li></ul><ul><l...
Mixture <ul><li>Two or more kinds of elements or compounds combined without a chemical reaction.  </li></ul><ul><li>Indivi...
<ul><li>Physical properties may change. </li></ul><ul><li>Their atoms do not change.  </li></ul><ul><li>Mixtures do not co...
Mixture Classification  <ul><li>Mixtures are classified according to how well they are mixed. </li></ul><ul><li>Heterogene...
Separation Techniques
Manually
Settling <ul><li>Centrifuge is a device in which solid or liquid particles of different densities are separated by rotatin...
Filtration <ul><li>Separates a solid from a liquid through the use of a porous material as a filter. </li></ul><ul><li>Pap...
Magnetism
Chromatography <ul><li>Separates mixtures into the chemicals from which they are made.  </li></ul>
Distillation <ul><li>Solution is heated until it boils. The liquid with the lowest boiling point boils first and becomes a...
 
Decantation <ul><li>Separates a liquid from insoluble solid sediment by carefully pouring the liquid from the solid withou...
 
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Mixutres2008

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  • Mixutres2008

    1. 1. <ul><li>Notes: Mixtures </li></ul><ul><li>CW: Substances vs Mixtures </li></ul><ul><li>H: More about Mixtures </li></ul>
    2. 2. Mixtures November 12, 2008
    3. 3. Objectives <ul><li>Describe the properties of mixtures </li></ul><ul><li>Compare a mixture to a substance </li></ul><ul><li>Name common separation techniques for a mixture </li></ul><ul><li>Define mixture, homogeneous, heterogeneous, distillation, filtration, chromatography </li></ul>
    4. 4. Mixture <ul><li>Two or more kinds of elements or compounds combined without a chemical reaction. </li></ul><ul><li>Individual components maintain their individual properties. </li></ul>
    5. 5. <ul><li>Physical properties may change. </li></ul><ul><li>Their atoms do not change. </li></ul><ul><li>Mixtures do not combine in definite amounts. They can be present in any ratio. </li></ul>
    6. 6. Mixture Classification <ul><li>Mixtures are classified according to how well they are mixed. </li></ul><ul><li>Heterogeneous </li></ul><ul><li>Homogeneous </li></ul>
    7. 7. Separation Techniques
    8. 8. Manually
    9. 9. Settling <ul><li>Centrifuge is a device in which solid or liquid particles of different densities are separated by rotating them in a tube in a horizontal circle. </li></ul>
    10. 10. Filtration <ul><li>Separates a solid from a liquid through the use of a porous material as a filter. </li></ul><ul><li>Paper, charcoal, or sand can serve as a filter. </li></ul>
    11. 11. Magnetism
    12. 12. Chromatography <ul><li>Separates mixtures into the chemicals from which they are made. </li></ul>
    13. 13. Distillation <ul><li>Solution is heated until it boils. The liquid with the lowest boiling point boils first and becomes a gas. </li></ul>
    14. 15. Decantation <ul><li>Separates a liquid from insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid </li></ul>

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