1. CHEMISTRY SEPTEMBER 23, 2014 Pure Substance vs. Mixture

2. SCIENCE STARTER You have 3 minutes Work silently and individually

3. NON-NEGOTIABLE ONE SPEAKER – EVERYONE ELSE ACTIVELY LISTEN REMAIN IN YOUR SEAT FOLLOW ALL DIRECTION

4. CONSEQUENCES VERBAL WARNINGS – 5 POINTS OFF CALL HOME DETENTION SLIP FROM THE DEAN/AP

5. OBJECTIVE SWBAT – Identify the difference between a pure substance and a mixture by providing examples. – Identify the difference between a homogenous mixture and a heterogeneous mixture. – Use a particle diagram to illustrate the difference between a pure substance and a mixture.

6. AGENDA – Science Starter – Review of Pure Substance and Mixture – Identify the Separation techniques – Activity

7. PURE SUBSTANCE 2 types: – Element – Compound

8. QUIZ MAKEUP Next Wednesday – Quiz Makeup 4 th period or 9 th period (up until 4:15PM)

9. PURE SUBSTANCE Have constant composition and constant properties

10. ELEMENT

11. COMPOUNDS Examples: – Carbon dioxide = CO 2 – Sodium Chloride= NaCl – Ammonia = NH 3 – Methane = CH 4 – Hydrochloric Acid = HCl

12. MIXTURE Two types: – Homogeneous – Heterogeneous

13. MIXTURES Have varied composition and properties

14. PARTICLE DIAGRAMS A method by which a box with colorful balls are drawn to represent atoms or molecules.

15. PARTICLE DIAGRAMS - ELEMENTS

16. PARTICLE DIAGRAMS - COMPOUND

17. PARTICLE DIAGRAMS - HOMOGENEOUS

18. PARTICLE DIAGRAMS - HETEROGENEOUS

19. SEPARATION TECHNIQUES Chromatography Filtration Evaporation Distillation Magnetism

20. CHROMATOGRAPHY One type is called Paper Chromatography – Usually used to identify chemicals (coloring agents)

21. CHROMATOGRAPHY

22. FILTRATION Method for separating an insoluble solid from a liquid – Popularly used in water treatment

23. FILTRATION

24. EVAPORATION Method used to separating a homogeneous (solution) mixture of a soluble solid and a solvent Involves heating the solution until the solvent evaporates – Examples: water and sugar solution – Heat the solution until the water (solvent) dissolve leaving behind the sugar

25. EVAPORATION

26. DISTILLATION Method used to separate a liquid from a solution Similar to evaporation but the vapor is collected by condensation

27. DISTILLATION

28. MAGNETISM Method used to separate two solids with one having magnetic properties

29. MAGNETISM

30. SEPARATING FUNNEL Method for separating two immiscible liquids (liquids that do not dissolve well) – Oil and water

31. SEPARATING FUNNEL

32. Activity – Extra Points 1. Draw the Chromatography Experiment – Also include a description of what you did – 5 points 2. Draw the Filtration Experiment – Also include a description of what you did – 5 points