Mixutres2008
- 1. Notes: Mixtures CW: Substances vs Mixtures H: More about Mixtures
- 2. Mixtures November 12, 2008
- 3. Objectives Describe the properties of mixtures Compare a mixture to a substance Name common separation techniques for a mixture Define mixture, homogeneous, heterogeneous, distillation, filtration, chromatography
- 4. Mixture Two or more kinds of elements or compounds combined without a chemical reaction. Individual components maintain their individual properties.
- 5. Physical properties may change. Their atoms do not change. Mixtures do not combine in definite amounts. They can be present in any ratio.
- 6. Mixture Classification Mixtures are classified according to how well they are mixed. Heterogeneous Homogeneous
- 8. Manually
- 9. Settling 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.
- 10. Filtration Separates a solid from a liquid through the use of a porous material as a filter. Paper, charcoal, or sand can serve as a filter.
- 11. Magnetism
- 12. Chromatography Separates mixtures into the chemicals from which they are made.
- 13. Distillation Solution is heated until it boils. The liquid with the lowest boiling point boils first and becomes a gas.
- 15. Decantation Separates a liquid from insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid