For questions 15 refer to the situation below:
15. Jose wants to find out the length of time that sugar will dissolve in Glass A and Glass B. He put warm water in
glass A and cold water in glass B. The amount of sugar was the same two tablespoons each for glass A and B.
What is the Constant Variable?
a. Length of time that sugar will dissolve
C. Temperature of water
b. Amount of sugar
d. Glass containers
16. How many grams of copper in a gold necklace containing 10% of Gold by mass if it has a mass of
250 grams?
a. 250 grams copper b. 200 grams copper c. 25 grams copper d. 2.5 grams copper
17. A solution is prepared by mixing 20 g of sodium chloride in 80 g of water. What are the concentrations of the
solute and solvent in % by mass?
Solute: 10%, Solvent: 90%
b. Solute: 20%, Solvent: 80%
c. Solute: 30%, Solvent: 70%
d. Solute: 40%, Solvent: 60%
18. What substance can dissolve other substance in a solution?
a. Solvent
c. Mixture
b. Solute
d. All of the above
19. What is the substance called that is being dissolved in a solution?
a. Mixture
c. Solute
b. Solvent
d. All of the above
20. What can you do to DILUTE a pitcher of lemonade if you think it doesn't taste right?
a. Put it in the Refrigerator
c. Boil the lemonade
b. Add water
d. Add sugar
21. To make a solute dissolve more quickly in a solvent, which would you do?
a, Stir it
c. Do not touch the solution
b. Let the solute sette down
d. Nothing to do
22. Which of the following substances will easily be dissolve in water?
a. Baking soda
c. Table sugar
c. Cooking oil
d. Kerosene
23. Supersaturated solution is one with
a. Equal amounts of solute and solvent
b. Greater amount of solute
c. Less solvent than solute
d. Less solute than solvent
24. How will you identify a Saturated Solution?
a. Less solvent than solute
b. Less solute than solvent
c. Equal amounts of solute and solvent
d. Less amount of both solute and solvent
25. Which of the following refers to the solution that contains less amount of solute than can dissolves at a given Temperature?
A. Solubility
B. Satured solution
C. Unsaturated solution
D. Supersaturated solution