6. Imagine that you performed an experiment in which you dissolved different
samples of sugar (sugar cubes, extra fine sugar, and regular table sugar) into
water samples to compare how long they took to dissolve
Which factor would be least important to the design of this experiment?
A. The same amount of sugar must be used in each sample.
B. The sugar samples must all contain only sugar and water.
C. The water samples must all be at the same temperature.
D. All the samples must be tested at the same time of day.
7. When a substance dissolve, it ____________.
A. it mixed evenly.
B. it spread throughout the mixture, but it retains its properties and can
be recovered
C. it might look it has disappeared, but it has just mixed with the other
substance.
D. it is soluble.
8. Your father asked you to make a cup of coffee during breakfast. You found a
3-in-1 coffee on your table. What will happen with 3-in-1 coffee when pour in a
hot water?
A. The water will change its color.
B. The coffee powder will be dissolves and the water will change its color.
C. The water and coffee will mix evenly and will lose their individual
properties.
D. The water and coffee will mix evenly without losing their properties.
9. How does the temperature affect the solubility of the substance?
A. As the temperature increases, it dissolves the substance.
B. As the temperature increases, the substance dissolves slowly.
C. As the temperature increases, the substance will dissolve quickly and
form new substance
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Answer:
6.C
7. D
8.D
9.D
Explanation:
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