Properties of Solutions

When a solution is saturated:

• No additional material will dissolve in it

• You need to stir it more 

• Two materials have combined to create a clear liquid

• Crystals form 

You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:

• saturated

• unsaturated

• concentrated

• warm

How do you know when you have a saturated solution?

• You don't see anymore material in the solution. It has dissolved.

• The material dissolves and no more will dissolve because you see it collect at the bottom.

• The solution is bubbling and cloudy.

• The solution is clear and there is nothing at the bottom.

A saturated solution is made by dissolving 40 grams of a solid in 200mL of water. A second solution is made by dissolving 20 grams of the same solid in 100mL of water. How would this solution be classified?

• unsaturated

• saturated

• supersaturated

• hypersaturated

Which of the following statements is true concerning acids and bases?

• acids and bases don't react with each other

• acids mixed with bases neutralize each other

• acids mixed with bases make stronger bases

• acids mixed with bases make stronger acids

Tags

NGSS.MS-PS1-2

Neutral solutions have a pH of:

• 0

• 1

• 7

• 14

Which is true?

• pH of less than 7 is basic; pH of more than 7 is acidic

• pH of less than 7 is acidic; pH of more than 7 is basic

What can you conclude based on the diagram? There could be more than one correct answer.

• Liquid A a concentrated ionic solution

• Liquid B is a concentrated ionic solution

• Liquid A is a concentrated covalent solution.

• Liquid B is a concentrated covalent solution.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What happens when KBr is dissolved in water?

• Br - ions are attracted to positive K ions

• Br - ions are attracted to the oxygen atom of water

• K+ ions are attracted to the hydrogen atoms of water

• no attractions are involved

Tags

NGSS.MS-PS1-2

Which substance is MOST soluble at 0 ºC?

• KI

• NaNO₃

• NaCl

• Ce₂(SO₄)₃

Tags

NGSS.MS-PS1-2