Solutions

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

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

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
• stays the same
• cannot tell

Which of the following has components in a uniform arrangement?

• Heterogeneous mixture
• Colloids
• Suspensions
• Solutions

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

The Tyndall effect is used to distinguish between 

• gases and solids
• solutions and colloids
• solvent and suspensions
• all of these 

Which of the following will produce crystals if disturbed?

•  saturated solutions
• colloids
• supersaturated solutions
• unsaturated solutions