_1. Which of the following is not a characteristics of a solution?
A. Clear and transparent
C. Can be separated by physical means
B. two or more phases can be observed
D. none of the above
2-5.Hannah and Louise wanted to find
out how much salt is dissolved to make a saturated solution in 100 mL of
water. Use the following data to answer the question below the table.
Step number Amount of salt added Observation
LA
1
6 grams
After stirring, salt completely dissolved
2
6 grams
After stirring, salt completely dissolved
3
6 grams
After stirring, salt completely dissolved
4
6 grams
After stirring, salt completely dissolved
5
6 grams
After stirring, salt completely dissolved
6
6 grams
After stirring, salt completely dissolved
7
6 grams
After stirring, some is seen at the bottom of the container.
_2. Which is the solute of the solution?
A. water
B. salt
C. both salt and water D. none of the above
3. Refer to the table above, which is the solvent?
A. water
B. Salt
C. both salt and water D. None of the above
4. In which step in the solution dissolved as saturated?
A. step 1
B. step 3
C. step 4
D. step 7
5. What is the concentration of the solution in step 4?
A. 6/100 grams
B. 12/100 grams C. 18/100 grams
D. 24/100 grams
_6. A piece of jewelry is made up of 18K.It means that the jewelry is made up of
A. 18 parts is made up of copper and 6 parts is gold
B. 18 parts is made up of gold and 6 parts is copper
C. 9 parts is made up of copper and 9 parts is gold
D. 18 parts is made up of finest gold suited for the purpose
a
_7. Which of the following describes a diluted solution?
A. It has a small amount of dissolved solute in a much less amount of solute
B. It has the same amount of dissolved solute and solvent.
C. It has a small amount of dissolved solute in comparison to the given amount of solvent.
D. It has a greater amount of dissolved solute in a given amount of solvent.
8. When there is a large amount of dissolved solute for a certain volume of solvent, the solution is said to be
A. diluted
B. unsaturated C. concentrated D. heterogeneous
9. 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?
A. Solute : 10% solvent: 90%
C. Solute : 30% solvent: 70%
B. Solute : 20% solvent: 80%
D. Solute : 40% solvent: 60%
__10. A beverage contains 3% alcohol which means that the solution contains
A.3 ml of alcohol in 97 ml of water
C. 300ml of alcohol in 700 ml of water
B. 30 ml of alcohol in 70 ml of water
D. 100 ml of alcohol in 100 ml of water
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Answer:
1a
2c
3c
4b
5a
6c
7c
8b
9a
10a
Explanation:
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