Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
150 Chemistry: Matter and Change
Solving Problems: A Chemistry Handbook
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
CHAPTER 14
type of heterogeneous mixture, a suspension, the suspended particles are greater than 1000 nm in diameter and eventually settle out
of the mixture. In another type of heterogeneous mixture, a colloid,
the particles are between 1 nm and 1000 nm in diameter. Normally,
they do not settle out of the mixture, due in part to Brownian
motion, an erratic movement of particles. Colloids that appear clear
can be distinguished from solutions because the particles in the
colloids are large enough to scatter light, a phenomenon called
the Tyndall effect.
Practice Problems
18. Four mixtures having the following properties are examined.
Identify each mixture as a solution, a suspension, or a colloid.
If the properties are not conclusive for identification, state
which types of mixtures are possible.
a. quickly settles out into a watery liquid and an oily liquid
b. is transparent and does not settle out
c. is transparent, scatters the light from a flashlight beam, and
shows zigzag motions when observed through a microscope
d. is transparent and does not scatter the light from a flashlight
beam
Chapter 14 Review
19. Define solvation. Explain what happens in terms of attractive
forces when a substance dissolves in a solvent.
20. Contrast saturated, unsaturated, and supersaturated solutions.
21. State Henry’s law in words, and write the equation for it.
22. Explain how percent by mass is calculated.
23. What is the difference between a 2M solution and a 2m
solution?
24. Define colligative property, and identify four colligative
properties.
25. Would you expect the freezing point depression of a 1m-solution
of sucrose and that of a 1m-solution of sodium chloride to be
the same? Explain.
26. Contrast a solution, a suspension, and a colloid in terms of their
nature, properties, and particle size.
150 Chemistry: Matter and Change
Solving Problems: A Chemistry Handbook
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
CHAPTER 14
type of heterogeneous mixture, a suspension, the suspended particles are greater than 1000 nm in diameter and eventually settle out
of the mixture. In another type of heterogeneous mixture, a colloid,
the particles are between 1 nm and 1000 nm in diameter. Normally,
they do not settle out of the mixture, due in part to Brownian
motion, an erratic movement of particles. Colloids that appear clear
can be distinguished from solutions because the particles in the
colloids are large enough to scatter light, a phenomenon called
the Tyndall effect.
Practice Problems
18. Four mixtures having the following properties are examined.
Identify each mixture as a solution, a suspension, or a colloid.
If the properties are not conclusive for identification, state
which types of mixtures are possible.
a. quickly settles out into a watery liquid and an oily liquid
b. is transparent and does not settle out
c. is transparent, scatters the light from a flashlight beam, and
shows zigzag motions when observed through a microscope
d. is transparent and does not scatter the light from a flashlight
beam
Chapter 14 Review
19. Define solvation. Explain what happens in terms of attractive
forces when a substance dissolves in a solvent.
20. Contrast saturated, unsaturated, and supersaturated solutions.
21. State Henry’s law in words, and write the equation for it.
22. Explain how percent by mass is calculated.
23. What is the difference between a 2M solution and a 2m
solution?
24. Define colligative property, and identify four colligative
properties.
25. Would you expect the freezing point depression of a 1m-solution
of sucrose and that of a 1m-solution of sodium chloride to be
the same? Explain.
26. Contrast a solution, a suspension, and a colloid in terms of their
nature, properties, and particle size.