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Chemistry Chapter 2 : Topic 7
Solubility and Saturation
1 / 20
Which statement best explains the effect of temperature on the solubility of most solid solutes in water?
Reasoning: For most solid solutes, higher temperature provides kinetic energy that helps break solute particles and increases solubility.
2 / 20
A solution becomes saturated when:
Reasoning: A saturated solution is one in which the solvent has dissolved the maximum amount of solute at a specific temperature.
3 / 20
What will happen if more solute is added to a saturated solution at constant temperature?
Reasoning: In a saturated solution, no more solute can dissolve, so excess solute remains undissolved.
4 / 20
An unsaturated solution is one in which:
Reasoning: Unsaturated solutions have the capacity to dissolve more solute at the same temperature.
5 / 20
Which factor most directly changes solubility of solids in liquids?
Reasoning: For solids in liquids, temperature has the greatest effect on solubility.
6 / 20
When a saturated solution is heated, it usually becomes:
Reasoning: Heating increases solubility, allowing more solute to dissolve, so the solution becomes unsaturated.
7 / 20
Cooling a saturated solution generally causes:
Reasoning: Lower temperature reduces solubility, causing extra solute to come out as crystals.
8 / 20
Which statement is TRUE about solubility and temperature?
Reasoning: Most solid solutes dissolve more in liquids when temperature increases.
9 / 20
A student adds salt to water and stirs until no more dissolves. This stage is called:
Reasoning: When no more solute dissolves, the solution is saturated.
10 / 20
Why does sugar dissolve faster in hot tea than cold tea?
Reasoning: Higher temperature increases particle motion and solubility rate.
11 / 20
Which condition describes an unsaturated solution correctly?
Reasoning: Unsaturated solutions have room for more solute to dissolve.
12 / 20
What happens when a saturated solution is cooled slowly?
Reasoning: Cooling decreases solubility, causing crystallization.
13 / 20
Which process is best explained by temperature-dependent solubility?
Reasoning: Crystallization occurs when solubility decreases with temperature.
14 / 20
If solubility increases with temperature, then a solution at high temperature compared to low temperature will:
Reasoning: Higher temperature allows more solute to dissolve.
15 / 20
Which best explains why hot solutions can dissolve more solute?
Reasoning: Heat increases kinetic energy and reduces effective attraction between particles.
16 / 20
A solution that contains less solute than it can dissolve at a given temperature is:
Reasoning: It still has capacity to dissolve more solute.
17 / 20
Supersaturated solution is formed when:
Reasoning: It contains more solute than normally possible at a lower temperature.
18 / 20
Why does solubility of most solids increase with temperature?
Reasoning: Heat provides energy to break solute-solvent interactions.
19 / 20
Which observation shows a solution has become saturated?
Reasoning: Excess solute remains undissolved in a saturated solution.
20 / 20
If a saturated solution at high temperature is cooled, the most likely result is:
Reasoning: Decrease in solubility causes crystallization.
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