Exam Review

How does a solution become supersaturated?

• dissolve lots of solute in it.
• dissolve a little solute in it. 
• dissolve more solute than you should be able to. 
• dissolve a solvent in it. 

__________ are made up of solutes and solvents.

• Solutions
• Suspensions
• Heterogeneous Mixtures
• Pure Substances

When a solvent contains as much of the solute as it can hold, the solution is said to be

• supersaturated
• diluted
• saturated
• unsaturated

How many grams of CaCl₂, are soluble in 100 g of water at approximately 17 ºC?

• 58 grams

• 70 grams

• 0 grams

• 12 grams

When 42 grams of potassium chloride ( KCl), is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated

• saturated

• unsaturated

The solution salt needs ___ grams of solute dissolved in 100ml of water at 60⁰ C to make the solution supersaturated 

• 200 grams 
• 350 grams
• 290 grams
• 300 grams

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

• 60

• 30

• 83

• 50

Which is the most soluble at 0 C?

• Water

• NaCl

• NaNo3

• Kl

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer