1. 2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt A BCDE

2. When a few spoonfuls of sugar are mixed into a cup of water, water is the a.solute b.solvent c.catalyst d.mixture

3. b.solvent

4. When iodine is dissolved in alcohol, what term is used to describe the iodine? a.solute b.solvent c.mixture d.suspension

5. a.solute

6. How is solute different from a solvent in a solution? a.The solute is a solid and the solvent is a liquid b.The solute is present in a greater amount c.The solute is present in a smaller amount d.There is no difference because the solute and solvent are in equal amounts in the solution

7. c.The solute is present in a smaller amount

8. A liquid mixture in which particles cannot be seen but scatter light beams is a a.colloid b.solution c.suspension d.catalyst

9. a.colloid

10. When you add so much solute that no more dissolves, you have a(n) a.unsaturated solution b.saturated solution c.supersaturated solution d.desaturated solution

11. b.Saturated solution

12. If 60 grams of solute is dissolved to make 100 grams of solution, what is the concentration of the solution? a.40% b.60% c.100% d.160%

13. b.60%

14. Dissolving sugar in water is an example of a physical change because a.Neither of the substances changes into a new substance b.The sugar cannot be separated from water c.The water cannot become saturated with sugar d.Salt water is a different substance than either salt or water

15. a.Neither of the substances changes into a new substance

16. What is one way to increase the solubility of salt in water? a.Chill the water b.Increase the amount of salt c.Heat the water d.Increase the pressure

17. c.Heat the water

18. When a solute, such as salt, is added to a solvent, the freezing point of the solution is a.raised b.lowered c.the same d.is raised then lowered

19. b. lowered

20. How many grams of NaCl is soluble in 100 g of water at 90°C a.10g b.20g c.30g d.40g

22. Which substance is most soluble at 20°C a.NaNO 3 b.CaCl 2 c.NaCl d.KNO 3

23. a. NaNO 3

24. Which substance is least soluble at 50°C a.Ce 2 (SO 4 ) 3 b.NaCl c.KCl d.KClO 3

25. a. Ce 2 (SO 4 ) 3

26. The solubility of which two substances is nearly the same at 30°C a.NaCl and KNO 3 b.NaCl and KClO 3 c.NaNO 3 and CaCl 2 d.NaCl and KCl

28. When 80g of NaNO 3 is dissolved in 100 g of water at 10°C, the solution is a.unsaturated b.saturated c.supersaturated d.None of the above

29. b. saturated

30. Which compound decreases in solubility as the temperature increases? a.NaCl b.KCl c.NaNO3 d.Ce 2 (SO 4 ) 3

32. If the solution of KNO 3 was cooled from 50°C to 10°C, how many grams of solute would precipitate out of solution? a.20g b.40g c.70g d.90g

33. c. 70g

34. A mixture in which particles can be seen and easily separated by settling or filtration is called a(n) a.solvent b.solution c.colloid d.suspension

36. Which is an example of a colloid? a.Sugar water b.Whipped cream c.Snow globe d.Italian salad dressing

37. b. Whipped cream

38. A mixture that contains a solvent and at least one solute is called a(n) a.suspension b.colloid c.solution d.catalyst

39. c. solution

40. Which of the following is a true statement about temperature and solubility a.Most solids become less soluble as the temperature increases b.Nitrogen dissolves better in cold water than in hot water c.Most gases become more soluble as the temperature increases d.Sugar dissolves better in cold water than in hot water

41. b. Nitrogen dissolves better in cold water than in hot water

42. You can make a dilute solution by a.increasing the amount of solvent b.increasing the amount of solute c.decreasing the amount of solvent d.heating the solution

43. a. increasing the amount of solvent

44. If two unidentified solids of the same texture and color have different solubilities in 100g of water at 20°C, you could conclude that a.they are different substances b.they are the same substance c.their solubilities will be the same if the water temperature is increased d.they have the same densities

45. a. they are different substance

46. How would a solute affect the boiling point of water? a.The water will boil at a lower temperature b.The water will boil at the same temperature c.The water will boil at a higher temperature d.None of the above

47. c. The water will boil at a higher temperature

48. When a solid compound dissolves in water a.it breaks up into individual crystals b.its particles surround individual water particles c.each of its particles becomes surrounded by water molecules d.each of the particles disappears

49. c. each of its particles becomes surrounded by water molecules

50. When 30g of NaCl is dissolved in 100 g of water at 90°C, the solution is a.unsaturated b.saturated c.supersaturated d.desaturated

51. a. unsaturated