The document describes different types of mixtures and separation techniques. It defines a mixture as two or more substances combined without a chemical reaction that maintain their individual properties. Mixtures are either heterogeneous, with components visually distinguishable, or homogeneous. Common separation techniques include distillation, filtration, chromatography, and others that separate mixtures based on differences in their boiling points, ability to pass through filters, or interactions with magnetic or other fields.

1. Mixutres

2. 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

3. Mixture Two or more kinds of elements or compounds combined without a chemical reaction. Individual components maintain their individual properties.

4. Physical properties may change Color Melting point Freezing point Electron configuration of their atoms do not change.

5. Compounds combine in definite ratios – H 2 0, C 6 H 12 O 6 , CO 2 , NaCl Mixtures do not combine in definite amounts. They can be present in any ratio.

6. Matter Classification

7. Mixture Classification Mixtures are classified according to how well they are mixed. Heterogeneous Homogeneous

8. Separation techniques Manually .

9. Separation techniques Distillation The solution is heated until it boils. The liquid with the lowest boiling point boils first and becomes a gas. Evaporation

11. Separation techniques Decantation This separates a liquid from insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid

12. Separation techniques Filtration . This 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.

13. Separation techniques 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.

14. Separation techniques Chromatography . a method for analyzing mixtures by separating them into the chemicals from which they are made.

15. Separation techniques Magnetism