1. QQ:
Which of the following
are pure substances?
Solid gold coins Sweet tea
Sedimentary rocks Water
Salt Cake
Stainless Steel C6H12O6
Taco salad Sand
2) What is the difference between heterogeneous and homogeneous mixtures?

2. Today’s objective:
I am able to classify matter.

4. Crash course hyperlink

6. Pure substance, element,
compound, or mixture?

7. Pure substance, element,
compound, or mixture?
Sugar: C6H12O6

8. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

9. Pure substance, element,
compound, or mixture?
Aluminum

10. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

11. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

12. Pure substance, element,
compound, or mixture?

13. Pure substance, element,
compound, or mixture?

14. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

15. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

16. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

17. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

18. Pure substance, element,
compound, or mixture?

19. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

20. Pure substance, element,
compound, or mixture?

21. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

22. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

23. Pure substance, element,
compound, or mixture?

24. Pure substance, element,
compound, or mixture?
Heterogeneous or Homogeneous

25. Solvent: First part or base; Solute: Substance poured into the solvent
Parts of Solutions:
Solvent: First part or base;
Usually major part
Solute: Substance poured into the solvent

26. All substances dissolve Parts < 1 nm Homogenous
Solution:
All substances dissolve
Parts < 1 nm
Homogenous
Can be liquid, gas, or solid
Light will pass through
Hyperlink to nanometer

27. Heterogeneous but appears homogeneous when mixed well
Suspensions
Heterogeneous but appears homogeneous when mixed well
Dissolves but separates over time
Particles are “suspended”
Light won’t pass through at first

28. Colloid
Larger molecule suspended between smaller ones (which prevents them from separating)
Particles in a liquid
Emulsion: liquids in liquids
Foam: gas in liquid
Aerosol: solid or liquid in a gas

29. colloids tend to scatter
Light passed through
colloids tend to scatter
and make a wide cone

30. Colloids:
Scatter light
Tyndall
Effect

32. Write 2 sentences that you might put on a vocabulary card to show the use of these terms:
Quantitative data
Density