California Content Standard 6.c

Which of the following would dissolve the fastest in water?
1. A large sugar cube
2. a large sugar cube broken into four pieces
3. a large sugar cube completely crushed
4. two large surgar cubes
Which of the following does not affect the dissolving process?
1. color
2. temperature
3. surface area
4. stirring
A saturated solution contains 0.002g or nitrogen gas a 10^oC. (Note: the solubility of the gas decreases with increasing temperature.) As the temperature increases to 35^oC,
1. the solution will contain 0.004 g N₂.
2. the solution will become unsaturated.
3. some N₂ will leave the solution and enter the gaseous phase.
4. a precipitate will form.
A large surface area
1. increases the dissolving rate.
2. decreases the dissolving rate.
3. increases the volume of solution.
4. decreases the volume of solution.
A solution contains 40g of sodium sulfate at a temperature of 40^oC. The solution
1. is saturated.
2. is supersaturated.
3. is not saturated.
4. has formed a precipitate.
If 120g of KNO₃ is dissolved in a solution at 70^oC and if the solution is cooled to a temperature of 40^oC but none of the solute precipitates, then the solution
1. has become unsaturated.
2. is said to be colligative.
3. has become neutralized.
4. has become supersaturated.