1. CHAPTER 3 MIXTURES

2. 1. All mixtures… A.can be separated without chemical changes. B. have a definite ratio of elements. C. have chemically combined elements. D. are solutions.

3. 2. Which is a suspension? A. Olive oil B. Tap Water C. Muddy water D. Mouthwash

4. 3. A mixture can only be separated by… A.they can never be separated! B.Chemical Changes C.Physical Changes D.Filtration

5. 4. In a solution of salt water, salt is the _______ and water is the _______. A. colloid, suspension B. solvent, solute C. solute, solvent D. compound, element

6. 5. How are solutions & colloids are alike? A.All solutions and colloids are liquids. B. Both solutions and colloids will scatter a beam of light passing through them. C. The solutes in solutions and colloids can be separated by filtration. D.The particles of solutions and colloids do not settle out.

7. 6. Bronze is a homogeneous mixture of copper and tin. This describes a… A. metallic colloid B. metallic suspension C. metallic alloy D. metallic compound

8. 7. A homogeneous mixture with two or more substances evenly mixed is a(n)… A. Element B. Solution C. Compound D. Suspension

9. 8. A mixture of visible particles which are diverse in size and type; the particles are not evenly dispersed is a(n)… A. Alloy B. Suspension C. Compound D. Colloid

10. 9. What is any substance with only one type of particle called ? A. Solution B. Compound C. Colloid D. Pure Substance

11. 10. Which is NOT a method that could separate a mixture? A. Burning B. Boiling C. Density D. Centrifugation E. Distillation

12. 11. Mixtures are classified by… A. Chemical bonds B. Exact ratios C. Particle sizes & varieties D. Solids, liquids, & gases

13. 12. Substance X scatters light and passes through a filter. It is a… A. Colloid B. Solution C. Compound D. Suspension

14. True or False A.True B. False

15. 13. Solutions and colloids are examples of homogeneous mixtures.

16. 14. An alloy is a heterogeneous mixture because it is made of two or more metals.

17. 15. Milk has a (+) Tyndall effect because its particles pass through a filter.

18. 16. Salad dressings are considered to be heterogeneous samples because they have visible particles or layers.

19. 17. A filter can separate a solution.

20. 18. Air is a solution of five or more gases.

21. 19. Examples of solutions include beverages like ice tea, Gatorade, and Kool- Aid.

22. 20. Whipped cream, gelatin, and milk are all examples of colloids.

23. 21. Heating and cooling of vapors to liquids are steps used in distillation.

24. 22. The solute is the part of the solution that is the “medium” or dissolves another substance.

25. 23. ALL mixtures have a definite ratio of components.

26. IT’S A MIXTURE! A. Yes B. No

27. 24. Substance A mixes with Substance B to form two different layers by density. They can be separated again through centrifugation.

28. 25. Substance Y & Substance W are heated in a test tube. New Substance X is formed as a gas.

29. 26. When Substance F is added to Substance A, the freezing point of Substance A has decreased by 10 o C.

30. 27. Can steel be classified as a mixture? Explain.

31. 28. Can blood be classified as a mixture? Explain.