Unit 8 - Chemical Solutions Test
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- 1.In a solution, the substance that is being dissolved is the _____.
- A.
Solute
- B.
Solvent
- C.
Liquid
- D.
Gas
- 2.The air that you breathe is an example of a(n) ____.
- A.
Gas
- B.
Solid
- C.
Liquid
- D.
Amalgam
- 3.In soda pop, the solvent would be the _____.
- A.
Water
- B.
Carbon dioxide
- C.
Sugar
- D.
Flavoring
- 4.A substance that does not conduct an electric current when it forms a solution is a(n) _____.
- A.
Electrolyte
- B.
Nonelectrolyte
- C.
Polar substance
- D.
Salt
- 5.A solution that contains all of the solute it can normally hold at a given temperature is _____.
- A.
Dilute
- B.
Unsaturated
- C.
Supersaturated
- D.
Saturated
- 6.The process by which the particles in a crystal are separated and drawn into solution by water is called _____.
- A.
Ionization
- B.
Dissociation
- C.
Polarity
- D.
Saturation
- 7.Increasing the surface area of a solid _____.
- A.
Slows the speed of dissolving
- B.
Has no effect on the speed of dissolving
- C.
Increases the speed of dissolving
- D.
Causes the solid to ionize
- 8.The solubility of gas in a liquid occurs faster if the liquid is ______.
- A.
Heated
- B.
Cold
- C.
Under low pressure
- D.
An electrolyte
- 9.Which of the the following types of solutes dissolves well in water?
- A.
Hydrocarbons
- B.
Polar molecules
- C.
Nonpolar molecules
- D.
Oil
- 10.The concentration of a solution that contains a large amount of solute in the solvent could be described as _____.
- A.
Unsaturated
- B.
Polar
- C.
Concentrated
- D.
Dilute
- 11.Which of the following would dissolve in iodine?
- A.
Water
- B.
Ethanol
- C.
Polar solvent
- D.
Vinegar
- 12.An alloy is an example of a _____ solution.
- A.
Gaseous
- B.
Liquid
- C.
Solid
- D.
Dilute
- 13.Adding more solute to a solvent _____.
- A.
Raises its freezing point
- B.
Lowers its boiling point
- C.
Raises its boiling point
- D.
Does not affect its boiling point
- 14.What is the first step of the dissolving process?
- A.
The molecules of the solvent pull the molecules of the solute into solution.
- B.
The molecules of the solute pull the molecules of the solvent into solution.
- C.
The moving molecules of the solvent spread the molecules of the solute equally throughout the solution.
- D.
The moving molecules of the solvent surround the molecules of the solute.
- 15.Which of the following combination would increase the solubility of a gas in a liquid?
- A.
Increase the pressure and decrease the temperature
- B.
Increase the pressure and temperature
- C.
Decrease the pressure and temperature
- D.
Decrease the pressure and increase the temperature
- 16.Which of the following will speed up the dissolving of a solid solute in water?
- A.
Stir the solution
- B.
Cool the solution
- C.
Grind up the solvent
- D.
Freeze the solute
- 17.Water is sometimes referred to as the universal solvent because _____.
- A.
It has no separated positive and negative areas
- B.
It is a small molecule and can fit easily among the molecules of many solutes
- C.
It has a polar and nonpolar end
- D.
Its molecules can slip easily among molecules of a nonpolar solvent
- 18.One commonly used precise way to describe concentrations of solutions is to state _____.
- A.
That the solution is dilute or concentrated
- B.
The percentage by area of the solute
- C.
The percentage by volume of the solute
- D.
The percentage by volume of the solvent
- 19.A molecule with a positive and negative area is ___.
- A.
Polar
- B.
Nonpolar
- C.
Ionic
- D.
Radioactive
- 20.The maximum amount of a solute that can be dissolved in a given amount of solvent is its ______.
- A.
Concentration
- B.
Density
- C.
Solubility
- D.
Dilution
- 21.Soap has a(n) ______ end that will dissolve in water and has a long hydrocarbon proton that will dissolve in oily dirt.
- A.
Ethanol
- B.
Dry
- C.
Toxic
- D.
Ionic
- 22.Adding a solute to a solvent raises the freezing point of the solvent.
- A.
True
- B.
False
- 23.Adding a solute to a solvent raises the boiling point of a solvent.
- A.
True
- B.
False
- 24.A substance that produces ions in water is a nonelectrolyte.
- A.
True
- B.
False
- 25.The ocean is a solution because it is a mixture of salts and water.
- A.
True
- B.
False
- 26.A gas dissolves in a liquid most rapidly when under low pressure.
- A.
True
- B.
False
- 27.Adding antifreeze to a car radiator increases the boiling point of the water in the radiator.
- A.
True
- B.
False
- 28.A general statement that describes which substances dissolve which is "like dissolves unlike."
- A.
True
- B.
False
- 29.Because grease is nonpolar, it cannot be dissolved in water.
- A.
True
- B.
False
- 30.An alloy is a solid solution.
- A.
True
- B.
False
- 31.The process called dissociation separates ionic crystals into ions.
- A.
True
- B.
False
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