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Total questions: 37
Worksheet time: 3hrs 44mins
Which would NOT increase the rate at which a sugar cube dissolves?
Reducing the amount of solvent
Crushing the sugar cube
Stirring the solution
Heating the solvent
A solution that contains all of the solute it can hold at a given temperature is
diluted.
saturated.
supersaturated.
unsaturated.
The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its
concentration.
density.
dilution.
solubility.
Three 10 g samples of sugar are represented below.
Sample A dissolves in water more slowly than sample B.
Sample B dissolves more slowly than sample C.
Which of the following best explains why sample A dissolves more slowly than the other two?
It has the most volume.
It has the smallest surface area.
It has the largest number of sugar molecules.
It has the fewest bonds between sugar modules.
Students in Ms. Alvarez’s science class are investigating how temperature, in degrees Celsius (C), affects the solubility of a compound in 100 milliliters (mL) of water. Ms. Alvarez provides the students with a graph that shows the solubility of a certain compound, as shown below.
She then tell the students that she will demonstrate how many grams (g) of the compound will dissolve in 100 mL of water at 40 C. Based on the information in the graph, which of the following is the best prediction of how many grams of the compound will dissolve at 40 C?
40 g
65 g
85 g
100 g
The solubility graph below shows the amounts of four substances that will dissolve in 100 grams of water at various water temperatures.
Which substance has 80 grams of solute dissolved in 100 grams of water at 50 C?
Potassium Bromide
Ammonium Chloride
Potassium Chloride
Lithium Hydroxide
A solution that is able to dissolve additional solute is best described as
supersaturated.
concentrated.
saturated
unsaturated.
Identify the solvent
Suppose you put equal amounts of pure water and salt water into separate ice cube trays of the same size and shape. When you put both trays in the freezer, what would you expect to happen?
The pure water would freeze faster than the salt water because the salt would lower the freezing point of the water.
The salt water would freeze faster than the pure water because the salt raises the freezing point of the water.
They would freeze at the same rate because the addition of a solute doesn't change the freezing point of water.
The pure water would freeze and the salt water would not.
Ionic compounds produce ions in solution by
ionization.
dissociation.
evaporation.
dispersion.
Concentration is
the amount of solute in the solvent
the amount of solvent in the solute
density
particle size
Which solution is more concentrated?
Solution 1:
500 mL of water
100 g of salt
Solution 2:
500 mL of water
90 g of salt
Solution 1
Solution 2
They have the same concentration
I have no idea
Which solution is more concentrated?
Solution 1:
20 mL of water
5 g of salt
Solution 2:
20 mL of water
10 g of salt
Not enough information to tell
Solution 1
Solution 2
They are equally concentrated
In order to dilute a solution, you need to
add more of the solid
add more water
find the mass
find the volume
Which solution is more diluted?
Solution 1:
1000 mL of water
60g of salt
Solution 2:
500 mL of water
60 g of salt
Not enough information to tell
Solution 1
Solution 2
They are equally diluted
How many grams of Calcium fluoride are needed to prepare 980 mL a 2.0 molar aqueous solution?
150 grams
2.0 grams
1.5 x 105 grams
160 grams
