Solutions Test Review

What property of water is responsible for a skilled chemistry student being able to float a paperclip on top of water?

• High surface tension
• Low surface tension
• High concentration
• Low concentration

A lab student adds salt to water.  What is the solvent?

• salt
• water
• the mixture that forms when salt and water are mixed

If a solution has the ability to dissolve more salt, it is classified as _______________.

• supersaturated
• saturated
• unsaturated
• monosaturated

The unit for molarity is ________ and it is used to describe the ____________ of a solution.

• Mole, Polarity
• Mole, Concentration
• M, Polarity
• M, Concentration

If a student wants to increase the concentration of a solution, the easiest thing to do is ...

• add more solvent

• add more solute

• remove some solvent

• remove some solute

What will happen to the concentration if more solvent is added to the solution?

• the concentration will increase
• the concentration will decrease
• the concentration will remain the same

What type of bonding occurs between water molecules?

• oxygen bonding
• hydrogen bonding
• water bonding
• nuclear bonding

What is the molarity of a solution that contains 0.3 moles sugar in 2.5 liters of solution?

• 8.33 m
• 0.12 m
• 0.12 M
• 8.33 M

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 super amount of solvent in it. 

What is the molarity of a solution produced when 45 grams of Na₂SO₄ is dissolved in 5.8 L? First you must convert to moles. Then find the molarity.

• 7.76 M

• 0.45 M

• 0.055M

• 5.45M