Solubility

Which of the following 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

Stirring the solution...

• decrease the rate of solubility

• Doesn't change the rate of solubility

• increase the rate of solubility

• None of the above

When you measure how fast a solute dissolves, you are measuring the

• amount of dissolving

• rate of particle movement

• amount of particle movement

• rate of solubility

Sugar dissolves faster in hot tea compared to iced tea.

What is the factor affecting the rate of solubility in the statement above?

• Rate of stirring

• Temperature

• Size of solute

• Total surface area

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

At what temperature does the solubility of NaCl, match the solubility of K₂Cr₂O₇?

• 60

• 30

• 83

• 50

Generally speaking, a substance dissolves better

• at higher temperatures
• at lower temperatures 

You and your friend have a contest to see who can brew tea the fastest by dissolving tea bags in water. Which of the following would NOT help you win?

• Cooling the water to brew the tea leaves

• crushing the tea leaves into smaller pieces

• Heating the water to brew the tea leaves

• Stirring or swirling the tea bags in the water

What is a solute?

• The substance that does the dissolving in a solution.
• The substance that is dissolved into the solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

Which of the following is considered the universal solvent?

• Salt

• Chocolate syrup

• Water

• Sugar