WorksheetsThe Nature of Solubility
Total questions: 15
Worksheet time: 8mins
A substance such as water is described as polar because its molecules have -
a neutral charge
a positive end and a negative end
two positive ends
two negative ends
60 milliliters of vinegar is added to 40 milliliters of water. In this solution, the vinegar is identified as the -
salt
base
solute
solvent
Water is known as the "universal solvent." This is due to -
the ratio of hydrogen to oxygen atoms
the bonds between hydrogen and oxygen atoms
the balance of OH- and H+ ions
the unequal sharing of electrons between hydrogen and oxygen atoms
A group of students are investigating gas solubility. Each group is given an amount of clear carbonated soda, hot water, cold water, four clear plastic cups, and a pair of goggles for each group member. Based on the materials provided, which question is most likely being investigated?
How does mixing cold water with carbonated soda affect the solubility of gas?
How does mixing warm water with carbonated soda affect the solubility of gas?
How does temperature affect how quickly dissolved gas will escape from carbonated soda?
How does temperature affect how quickly gas will dissolve in carbonated soda?
To increase the concentration of a solution, you would -
increase the amount of solute
increase the amount of solvent
cool the solvent
cool the solute
A crystal substance is dissolved into water. When a conductivity tester is placed in the water, a dim light is observed. The indicates that the crystal can be described as -
polar
nonpolar
an electrolyte
a non-electrolyte
A student is testing the rate of dissolution of a whole antacid tablet versus a crushed table. The crushed tablet would -
take the same amount of time to dissolve as a whole antacid tablet
not dissolve while the whole tablet would dissolve
dissolve slower than a whole tablet
dissolve quicker than a whole tablet
Nitrogen narcosis and the bends are disorders caused by nitrogen gas bubbles that form in the blood if the scuba diver surfaces too rapidly. Which of the following best explains the formation of the nitrogen bubbles in the diver's blood?
The deeper water contains less dissolved oxygen.
The solubility of gases decrease with increasing pressure.
Increased pressure underwater causes more nitrogen gas than normal to be dissolved in the blood.
Decreased pressure underwater causes less nitrogen gas than normal to be dissolved in the blood.
Solutions of ammonia (NH3) and water can be purchased at most grocery stores. What best explains why ammonia can dissolve in water?
Ammonia is a polar covalent compound.
Ammonia is a nonpolar covalent compound.
Ammonia is an ionic compound.
Pure ammonia is a solid at room temperature.
According to the graph and rules of solubility above, temperature affects the solubility of which salt the most?
NaCl
NaNO3
KNO3
KCl
According the the general solubility rules you wrote in your notes, which of the following can dissolve in water?
Ag2SO4
PbI4
MgS
KOH
If you decrease the temperature, what happens to the solubility of a solid solute in water?
The solubility increases because more collisions occur between the solute and solvent.
The solubility decreases because fewer collisions occur between solute and solvent.
The solubility decreases because more collisions occur between solute and solvent.
The solubility remains the same because the collisions between the solute and solvent stop.
In which state of matter is water the most dense?
gas
liquid
solid
Density of water is the same in all states of matter.
What is the predicted solubility of KCl at 70 deg. Celsius?
55 g
38 g
48 g
40 g
If a saturated solution of KCl at 80 deg. Celsius was suddenly cooled to 40 deg. Celsius, what would happen?
More solute could be dissolved.
The solution would spontaneously cool to 20 deg. Celsius.
The solution would become supersaturated.
Nothing special would happen, the increased temperature just made the dissolving process quicker.
