Solubility and Saturated Solutions

What happens when more sugar is added to a sugar solution that is already saturated?

• The additional sugar will dissolve instantly.

• The additional sugar will cause the water to boil.

• The additional sugar will not dissolve and will settle at the bottom.

• The solution will become unsaturated.

What defines a saturated solution?

• A solution that can dissolve an unlimited amount of solute.

• A mixture where no more solute can dissolve in a fixed amount of solvent.

• A solution that has been heated to its boiling point.

• A solution where the solvent has evaporated.

In a sugar solution, what roles do water and sugar play?

• Water is the solute, sugar is the solvent.

• Water is the solution, sugar is the solvent.

• Water is the solvent, sugar is the solute.

• Both water and sugar are solvents.

How does heating generally affect the solubility of solid substances like sugar in water?

• Heating decreases solubility.

• Heating has no effect on solubility.

• Heating increases solubility.

• Heating causes the substance to solidify.

For which types of substances does heating NOT significantly change their solubility in water?

• All solids.

• Gases and some salts like NaCl or CaSO4.

• Only sugar.

• Only substances that are already saturated.

What happens when wheat flour is added to water and stirred?

• It dissolves completely, forming a clear solution.

• It spreads throughout the water but does not dissolve, eventually settling at the bottom.

• It immediately forms a solid block at the bottom.

• It evaporates from the water.

Why does wheat flour appear to reach saturation almost instantly in water?

• Because it dissolves very quickly.

• Because water has a very high dissolving capacity for wheat flour.

• Because its dissolving capacity in water is very low, so even a tiny amount saturates it.

• Because it reacts chemically with water.

How does the dissolution of salt in water compare to that of sugar, as shown in the video?

• Salt dissolves faster than sugar.

• Salt takes longer to dissolve and saturate the solution than sugar.

• Salt does not dissolve in water at all.

• Salt and sugar dissolve at the same rate.

Do all substances saturate a solvent in the same way?

• Yes, all substances saturate at the same rate and amount.

• No, different substances dissolve in different amounts and in different times.

• Only solids saturate a solvent.

• Only liquids saturate a solvent.

Which of the following statements accurately summarizes a key learning from the video about saturated solutions?

• A saturated solution can always dissolve more solute if stirred vigorously.

• Heating always decreases the solubility of all substances.

• Some substances like wheat flour hardly dissolve, reaching saturation almost instantly with a tiny amount.

• All solutes saturate at the same point regardless of the solvent.