Solutions Review

Which of the following is a heterogeneous mixture

• water
• Salt dissolved in water
• chex mix
• air

Which of the following does not increase the rate of dissolving a solid in a liquid?

• stirring the solution
• crushing up the solute
• raising the temperature of the water
• lowering the temperature of the water

Tags

NGSS.HS-PS3-4

How many grams of ammonium chloride are needed to make a saturated solution at 80^o C?

• 50 grams
• 80 grams
• 65 grams
• 75 grams

At 40^oC which salt is least soluble?

• KClO₃
• NaCl
• KI
• KNO₃

Tags

NGSS.HS-PS1-3

What kind of solution is made from 50 grams of KNO₃ at 40^oC?

• saturated
• unsaturated
• supersaturated

Which will dissolve the slowest

• powdered sugar in hot water
• Powdered sugar in cold water
• sugar cubes in hot water
• sugar cubes in cold water

Tags

NGSS.HS-PS1-5

As the pressure decreases the solubility of a gas in a liquid

• increases
• decreases

If the amount of solute present in a solution is more than the maximum than can be dissolved, the solution is

• saturated
• unsaturated
• supersaturated
• colloidal

Which of these is true about a solvent?

• substance dissolving the other substance
• the substance getting dissolved
• both parts of the solution
• always water

What is the solute in a solution of salt and water?

• salt
• water
• neither
• both