A saturated solution will usually dissolve more solid solute if it is Select one

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A saturated solution will usually dissolve more solid solute if it is

Select one:

a. stirred.

b. frozen.

c. cooled.

d. heated.

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A molecule that has partially charged positive and negative areas is

Select one:

a. polar.

b. universal.

c. nonpolar.

d. decanted.

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The ability of a substance to dissolve in another at a given temperature and pressure is

Select one:

a. saturation.

b. concentration

c. solubility.

d. molarity.

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Which of the following is a homogeneous mixture?

Select one:

a. gelatin

b. rubbing alcohol

c. orange juice with pulp

d. salad dressing

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A heterogeneous mixture is one that is not

Select one:

a. uniform throughout.

b. made of two or more liquids.

c. edible by humans.

d. easily mixed together.

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Particles in a[n] _____ can be separated by filtration.

Select one:

a. suspension

b. All of the above

c. alloy

d. solution

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You can skim the fat off the top of a kettle of cold soup because fat is

Select one:

a. less dense than water and rises to the top.

b. an emulsion that remains dispersed throughout the soup.

c. made of large particles that will not pass through a filter.

d. made of small particles.

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A mixture that separates into different layers when you stop stirring it is a[n]

Select one:

a. colloid.

b. suspension.

c. emulsion.

d. solution.

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You can make a solute dissolve more quickly in a solvent by

Select one:

a. adding ice.

b. removing some solvent.

c. adding more solute.

d. heating the solvent.

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Mixtures can be either heterogenous or homogenous. Which is a characteristic of a homogeneous mixture?

Select one:

a. a mixture in which two or more substances are evenely distributed

b. a mixture in which two or more substances are still distinguished

c. a mixture in which large particles are not suspended and eventually settle

d. a mixture in which large particles are suspended

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All of the following will make it easier to dissolve a solute in a solvent except

Select one:

a. heating the solvent.

b. increasing the surface area of the solute.

c. stirring the solution.

d. adding a larger amount of solute.

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Which of the following is a method for separating a solution of miscible liquids?

Select one:

a. decanting

b. filtering

c. distilling

d. alloying

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Which substance is insoluble in water?

Select one:

a. olive oil

b. carbon dioxide

c. baking soda

d. ammonia

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Chlorine, which is used in swimming pools to kill bacteria, is a[n]

Select one:

a. solute.

b. solvent.

c. colloid.

d. emulsion.

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The particles in a colloid remain dispersed throughout the mixture because they

Select one:

a. are extremely small.

b. have a positive charge.

c. have a negative charge.

d. are of different sizes.

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Which would not increase the rate at which a sugar cube dissolves?

Select one:

a. heating the solvent

b. crushing the sugar cube

c. reducing the amount of solvent

d. stirring the solution

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Which statement about solutions is not correct?

Select one:

a. Solutions will not separate under normal circumstances.

b. Solutions can be made of liquids and solids, liquids and liquids, or gases and liquids.

c. Liquids that mix to form a single layer are said to be miscible.

d. In a solution, the solvent is dissolved into the solute.

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As the temperature is raised, the solubility of most solids tends to

Select one:

a. remain the same

b. increase

c. decrease

d. decrease, then increase

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Distillation can be used to separate solutions of miscible liquids because

Select one:

a. solids remain after the liquids are boiled away.

b. different liquids usually have different boiling points.

c. boiling breaks the chemical bonds within each liquid.

d. denser liquids sink to the bottom.

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A solution that is able to dissolve additional solute is best described as

Select one:

a. concentrated.

b. dilute.

c. saturated.

d. unsaturated.

Explanation / Answer

1)d. heated.

2)a. polar..

3)c. solubility

4.a. gelatin

5a. uniform throughout

6.a. suspension

7b. an emulsion that remains dispersed throughout the soup

8.b. suspension.

9d. heating the solvent.

10a. a mixture in which two or more substances are evenely distributed

11b. increasing the surface area of the solute

12c. distilling

13a. olive oil

14d. emulsion.

15a. are extremely small.

16c. reducing the amount of solvent

17d. In a solution, the solvent is dissolved into the solute.

18b. increase

19b. different liquids usually have different boiling points.

20d. unsaturated.

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