Preparing Solutions

Another name for a homogeneous mixture is 

• an element.

• a solution.

• a compound.

When Koolaid mix is light colored and tastes watery it is a _______ solution.

• saturated 

• diluted

When a Koolaid mix in water is dark in color and very sweet it is a __________ solution.

• concentrated 

• Diluted

To make a solute dissolve more quickly i n a solvent which would you do?

• Put it in cold water and stir it

• Put it in warm water and stir it

Tags

NGSS.MS-PS1-4

The concentration of a mixture can be increased in which of the following ways?

• Heating the mixture

• Adding more water “solvent”

• Adding more powder “solute”

• Stirring the mixture

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams

• 75 grams

• 40 grams

• 12 grams

Which solute is the least soluble at 90 ⁰C?

• SO₂

• KClO₃

• KI

• HCl

How does a solution become supersaturated?

• dissolve lots of solvent 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. 

Tags

NGSS.HS-PS1-5

When 20 grams of potassium chlorate, KClO₃, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:

• supersaturated

• saturated

• unsaturated

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

• supersaturated

• unsaturated

• saturated

Tags

NGSS.MS-PS1-2