Solutions Quiz

Show Mr. Graves your final score before closing your window. You must fill in all the answer spaces before pressing "Check" to check your answers . Use the "Hint" button to get a free letter but only if an answer is giving you trouble after you have guessed wrong. Note that you will lose points if you ask for hints and you will gain points by correcting your wrong answers.

Fill-In: Type the missing word to complete the sentence.
1. The freezing point is the temperature at which a liquid changes to a .
2. A contains more solute than it can normally hold at a given temperature.
3. Condensation is the changing of a gas into a .
4. The boiling point is the temperature at which a liquid changes into a .
5. Freezing point is the lowering of the freezing point of a liquid solvent by adding solute.
6. An unsaturated solution contains solute than it can hold at a given temperature.
7. Extra solute sitting at the b ottom of a solution indicates the solution is a solution.
8. Increasing the amount of solute in a solution can make a solution.
9. In distillation of a liquid, occurs first and then condensation.
10. For a solution to form, a must dissolve in a sovent.
11. Powdered sugar faster than a sugar cube.
12. The point of pure water is 0oC.

Multiple Choice: Type the letter of the correct choice in the blank space.
13. As the amount of solute in a solution increases, the of the solution also increases.
a.boiling point b.temperature c.freezing point d.solubility
14. Crystals of the same substance have the same .
a.size b.faces c.irregularities d.shape
15. Adding antifreeze to a car's cooling system raises the of the water it contains.
a.amount b.freezing point c.concentration d.boiling point
16. Placing rock salt on an icy sidewalk lowers the of the melted ice.
a.evaporation b.freezing point c.boiling point d.condensation

True or False: Write T or F in the space in front of each statement.
17. Stirring a solution speeds up the rate at which a solute dissolves.
18. The freezing point of salt water is higher than that of pure water.
19. Crystals form when extra solute is added to an unsaturated solution.
20. The ends of a water molecule are electrically charged.

Interpreting a Graph:
Insert image of solubility chart here.
21. About how many grams of sodium nitrate can be dissolved in 100g of water at a temperature of 50oC? grams. Round your answer to the nearest grid line.
22. At what temperature will 100 g of water dissolve 160 g of sodium nitrate? degrees Celsius. Round to the nearest grid line. Write only a number.
23. About how much sodium nitrate can be dissolved in 100 g of water at a temperature equal to the boiling point of pure water? grams. Round your answer to the nearest grid line.
24. About how much sodium nitrate can be dissolved in 100 g of water at a temperature equal to the freezing point of pure water? grams. Round your answer to the nearest grid line.
Constructed Response:
25. What is the relationship between the temperature of a solvent and the amount of solute it can dissolve? Write your answer on your handout only. It will be graded separately from the score shown above.