Solubility

Which statement accurately describes the difference between a soluble and an insoluble substance?

• A soluble substance is always a liquid, while an insoluble substance is always a solid.

• A soluble substance can dissolve, while an insoluble substance cannot.

• A soluble substance forms a suspension, while an insoluble substance forms a solution.

• A soluble substance is typically sugar, and an insoluble substance is typically salt.

What does the term 'solubility' refer to?

• The amount of solvent that can be mixed with a fixed volume of solute.

• The amount of solute that can dissolve in a fixed volume of water.

• The rate at which a substance changes from a solid to a liquid state.

• The ability of a substance to conduct electricity when dissolved in water.

What is the key characteristic of a saturated solution?

• It changes color when more solute is added.

• It contains the maximum amount of solute that can dissolve.

• It becomes more viscous as more solute is added.

• It releases heat when additional solute is introduced.

According to the solubility graph for Potassium chloride, what is its approximate solubility at 20°C?

• 28 g per 100 ml of water

• 30 g per 100 ml of water

• 34 g per 100 ml of water

• 36 g per 100 ml of water