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WorksheetsUnit Test : Properties of Materials
Total questions: 17
Worksheet time: 13mins
A solute is a solid that (a) in a liquid. The liquid it dissolves into is called a (b) Together they make a (c) A solid that does not dissolve in a liquid is called (d) The solubility of a solid measures how much of a solute will dissolve. When you measure the solubility of a solute you must use the same (e) and type of solvent at a given temperature.
The table gives the colors and solubility in water of four compounds. The compounds were added to separate beakers of water. There was enough water to dissolve the soluble compounds completely. The contents of each beaker were filtered.
1. One of the compounds left a white solid in the filter paper. What is the name of this compound? (a)
2. What is the color of the filtrate from this beaker? (b)
Some students have been investigating the mass of copper sulfate that can be dissolved in water at different temperatures. They added copper sulfate until no more would dissolve and they carefully measured the mass of copper sulfate they added. the result as shown in the table.
a. What name is given to a solution when no more of the solute can be dissolved in it? (a)
b. What range of temperatures did the students use? (b)
c. What interval did they use for the temperatures? (c)
d. What is a variable that the students should keep the same? (d)
e. Which is the independent variable? (e)
Increasing the temperature generally increases the solubility of most solid solutes in water.
True
False
Which of the following parameters can affect the solubility of a substance?
Temperature
Pressure
Surface area of the substance
All of them are correct
How does increasing the pressure affect the solubility of a gas in a liquid?
Increases the solubility
Decreases the solubility
Has no effect on the solubility
Substance R and Substance S are examined for their solubility in water at a given temperature.
Substance R completely dissolves in 150 mL of water, whereas Substance S only partially dissolves in the same volume of water.
Which statement is correct regarding their solubility?
Substance R has higher solubility than Substance S.
Substance S has higher solubility than Substance R.
Both substances have equal solubility.
The solubility cannot be determined from the given information.
At 0°C, the solubility of O2 in water is 14.6 mg/L. At 25°C, the solubility of O2 in water is 8.6 mg/L.
What can you conclude from this explanation?
increasing the temperature causes a decrease in the solubility of O2 in water.
decreasing the temperature causes a decrease in the solubility of O2 in water.
increasing the temperature causes an increase in the solubility of O2 in water.
We can't conclude anything from this explanation because of missing some information.
How many grams of Potassium Nitrate (KNO3) can dissolve in 100 grams of water at 25°C, if the solubility of KNO3 in water at this temperature is 32 grams per 100 grams of water?
32 grams
100 grams
320 grams
25 grams
At 0°C, the solubility of NaCl in water is 35.7 grams per 100 grams of water. At 100°C, the solubility of NaCl in water is 39.2 grams per 100 grams of water.
What can you conclude from this explanation?
The solubility of NaCl in water decreases as temperature increases
The solubility of NaCl in water increases as temperature decreases
The solubility of NaCl in water increases as temperature increases
The solubility of NaCl in water decreases as temperature decreases
Some students are doing an experiment and investigating the effect of fertilizer on plant growth.
Which of the following statement is correct for the control variables?
The amount of fertilizer given to each plant.
The growth of the plants.
The Amount of water
All of them
To investigate the solubility of sodium chloride in water, you could design an experiment where you gradually add sodium chloride to a fixed volume of water at room temperature, stirring the mixture until no more sodium chloride will dissolve. You would then record the mass of sodium chloride added and the volume of water used.
What is the dependent variable from this investigation?
The mass of sodium chloride added to the water.
The volume of water required to dissolve the sodium chloride.
The temperature of the water changed throughout the experiment
The stirring or mixing method of sodium chloride in water
How ‘saturated solution’ can be made?
Put enough soluble solid to dissolves completely in a solvent
Put enough insoluble solid to dissolves completely in a solvent
Put insoluble solid that does not dissolves in a solvent
Put soluble solid until no more of the solid will dissolve
What is the resulting image on the filter paper called?
Solubility
Soluble
Chromatogram
Paper chromatography
Let A = yellow, B = purple, C = red, D = blue
1. What is the color of F? (a)
2. How many dyes is a pure substance in the diagram shown? (b)
3. Which substance is similar with substance A? (c)
A technique used to separate a colored ink is called...
solubility
soluble
chromatogram
paper chromatography
In paper chromatography, the more soluble components of a mixture will travel faster and further on the chromatography paper than the less soluble components.
True
False
