Free Printable Unit Test on Solubility Curve

Worksheets

Unit Test on Solubility Curve

Total questions: 25

Worksheet time: 15mins

Name

Class

Date

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.

Solution where more solute can still be dissolved at the given temperature.

Saturated

Unsaturated

Mixture

Homogeneous solution

Describe a solute.

part of solution present in largest amount

gets dissolved

water

surrounds and breaks apart

__________ 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

What does it mean to dilute a solution?

lower the concentration of solute per solvent

increase the concentration of solute per solvent

You can make a solution more concentrated by adding __________.

solute

solvent

water

What is able to dissolve other substances?

Solute

Salt

Suspension

Solvent

What is the definition of solubility?

The amount of solute that can dissolve in 100 g of solvent at constant temperature

How much water that can break up a substance

The volume of gas required to aerosolize a solid

When you dissolve something in a solvent

10.

If I dissolve carbon dioxide in water, what is my solvent?

Carbon Dioxide

There is no solvent

Oxygen

Water

11.

On graphs showing solubility curves, what goes on the x-axis?

Temperature

Solubility

Mass

Time taken

12.

On graphs showing solubility curves, what goes on the y-axis?

Temperature

Solubility

Mass

Time taken

13.

What are the units of solubility?

cm³

g/100g of solvent

14.

If a substance has a solubility of 20 g/100g of solvent in water, how much would dissolve in 5 ml of water?

0.1 g

1 g

20 g

10 g

15.

If a substance has a solubility of 50 g/100g of solvent in water at 25^oC, how much would dissolve at 50^oC?

100 g

More than 50 g, but can't be specific

Less than 50 g, but can't be specific

It depends on what the solute is

16.

How is a supersaturated solution made?

Make a warm saturated solution, then carefully allow it to cool down

Keep stirring until excess solute dissolves

Add more water until all the solute dissolves

Add an extra different solute which will not interfere with the dissolving of the first solute

17.

If a solute has a solubility of 25 g/100g water, what mass of solute would dissolve in 250 ml of water?

62.5 g

100 g

10 g

250 g

18.

If 20 g of solute will dissolve in 15 ml of water, what is the solubility of the solution?

133 g/100g

1.33 g/100g

3000 g/100g

20 g/100g

19.

How much KNO₃ solute is saturated at 40 degrees?

20.

How much C₁₂H₂₂O₁₁ solute is saturated at 40 degrees?

240

220

230

250

21.

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

83 grams

75 grams

40 grams

12 grams

22.

Which substance is MOST soluble at 0 ºC?

NaNO₃

NaCl

Ce₂(SO₄)₃

23.

Which solute is the least soluble at 90 ⁰C?

SO₂

KClO₃

HCl

24.

Which of these solutes does not increase in solubility as temperature rises?

NH₃

NaNO₃

KNO₃

NaCl

25.

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