Direction: Read the following items carefully. Shade the letter of your answer on the answer sheet.
1
How would you describe concentration of solution?
A It describes the maximum amount of solute that can be dissolved in a given amount of solvent at a
given temperature
В. It describes the relative amounts of solute and solvent in a given amount of solution
С. It shows the mixture of solid materials suspended in a liquid,
D
It shows effect of temperature to the solubility of a material
2.
What kind of solution contains small amount of dissolved solute in comparison to the amount of solvent?
A Concentrated
B. Diluted
C. Saturated
D. Supersaturated
3.
When there is a large amount of dissolved solute for a certain volume of solvent, what kind of solution is this?
A Concentrated
B. Diluted
C. Saturated
D. Supersaturated
4.
In an experiment, food color is added to each glass of water with different amount. One glass looks darker
than the second glass. What conclusion can you create about the result of the experiment?
A The first glass has a concentrated solution while the second has diluted.
B. The first solution is diluted while the second is concentrated
C. The first glass shows that the food color dissolved completely in water than the second glass
D The second glass shows that the food color dissolved completely in water than the first glass
5
When you buy alcohol, you will notice that percentage is written on the bottle. What does it mean?
А. The percentage shows how much is the volume of the alcohol.
В. The percentage shows how much is the solvent in the alcohol.
C. The percentage shows how much is the solute in the alcohol.
D. The percentage shows how much will you use in the alcohol.
6. How many mL of isopropyl alcohol is present in a 150 ml bottle of rubbing alcohol which is 40% solution?
A 100 ml
B.90 mL
C. 20 mL
D. 60 mL
7. A coin has a mass of 6 grams. How many grams of copper are in a coin containing 70% copper by mass?
A. 4 grams
B. 4.5 grams
C. 5 grams
D. 4.2 grams
8. A solution of benzene and toluene was prepared by adding toluene to benzene until the total volume becomes
135mL. By volume, the solution is 30.0% benzene. How much benzene, in mL, is in the solution?
A. 39.5mL of benzene
C. 41.5mL of benzene
B. 40.5mL of benzene
D. 42.5mL of benzene
9 A solution is prepared by mixing a 20g of sodium chloride in 80g of water. What are the concentrations of the
solute and solvent in % by mass?
A. Solute: 10%; Solvent: 90%
C. Solute: 30% Solvent: 70%
B. Solute: 20% ; Solvent: 80%
D. Solute: 40% ; Solvent: 60%
10. A 10% solution Betadine has 3 mL of solute in 30 mL of solution. What kind of solution is this?
A. Diluted because the solute has lesser amount than the solvent.
B. Diluted because the solute has greater amount than the solvent.
C. Concentrated because the solute has lesser amount than the solvent.
D. Concentrated because the solute has greater amount than the solvent.
11. A beverage contains 3% alcohol which means that:
A. The solution contains 3mL of alcohol in 100 mL of water.
B. The solution contains 30mL of alcohol in 70mL of water.
C. The solution contains 300mL of alcohol in 700mL of water
D. The solution contains 100mL of alcohol in 100mL of water.
12. How many grams of sugar are needed to prepare 400 mL of 5% sugar solution?
A. 10 g
B.5 g
C. 20 g
D. 14 g

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