Chapter 7 Solutions And Colloids Worksheet With Answers Page 33
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33Solutions and Colloids 175
5. Ionic compounds are generally insoluble in non‐polar solvents.
Answer:
T
6. Rock candy (large table sugar crystals) can be produced by allowing a hot, saturated solution of sugar
in water to cool off.
Answer:
T
7. The solubility of a substance can be measured in grams substance dissolved per liter of water. This is
the same as expressing solubility in moles per liter.
Answer:
F
8. The more soluble a substance is, the faster it will dissolve.
Answer:
F
9. Weight/volume percentage solutions must be made in 100 mL increments.
Answer:
F
10. There is a 12 M aqueous HCl solution in the stock room, but a 6 M solution is required for an
experiment. Doubling the volume of a 12 M sample with water will produce a 6 M solution.
Answer:
T
11. Light scattering is an effective way to distinguish between true solutions and colloidal dispersions.
Answer:
T
12. Colloids can be stabilized by emulsifying agents.
Answer:
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13. Colloids are considered to be homogenous mixtures.
Answer:
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14. A mixture of sand and water would be an example of a colloidal suspension.
Answer:
F
15. Putting a celery stick in distilled water results in the uptake of water by the celery.
Answer:
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16. Solvents and hydrated ions can usually pass though dialyzing membranes
Answer:
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17. Dialysis can be used to separate solutions from colloids.
Answer:
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18. Dialysis and osmosis are used for the same purposes.
Answer:
F
19. The solubility of gases in water increases with increasing temperature.
F
Answer:
20. Emulsifying agents are also known as stabilizing agents.
Answer:
T
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