2.3 Solubility

Review; Mixtures & Solutions

Complete these few questions to test your memory / understanding of mixtures & solutions.

Multiple Choice

TRUE or FALSE

You brushed your teeth today

• TRUE

• FALSE

Multiple Choice

Mixtures or compounds?

They are impure substances.

• Mixtures

• Compounds

Multiple Choice

Use the table on page 72 to answer the next 12 questions.

Mixtures or compounds?

They are pure substances.

• Mixtures

• Compounds

Multiple Choice

Mixtures or compounds?

The constituents can be separated easily by physical methods.

• Mixtures

• Compounds

Multiple Choice

Mixtures or compounds?

The constituents can be separated only by chemical methods.

• Mixtures

• Compounds

Multiple Choice

The graph shows the temperature rise of two substances over a period of time. Which of the two is impure?

• Green substance

• Red substance

Multiple Choice

The graph shows the temperature rise of two substances over a period of time.

Which of the two is pure? Why?

• Green substance, melting section is continuous

• Red substance, melting section is conntinous

• Green substance, melting section is sharp

• Red substance, melting section is sharp

Multiple Choice

Which of the following best describes chicken noodle soup

• element

• compound

• mixture

• solution

Multiple Choice

A mixture that appears to be evenly mixed throughout:

• an atom

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Multiple Choice

A ______________ mixture is one that does not have a uniform composition.

• heterogeneous

• homogenous

• pure substance

Multiple Choice

Page 74; What is a solution?

• A mixture of a solid

• A mixture of a liquid

• A mixture of a liquid with a solid

• A mixture of a liquid with a solid or a gas

Multiple Choice

Page 74

In a water & sugar solution the water is the _______

• Solute

• Solvent

• Solution

Multiple Choice

Page 74

In a water & sugar solution the sugar is the _______

• Solute

• Solvent

• Solution

Multiple Choice

Water is the universal ____.

• solute

• solvent

• solution

2.3 Solubility

Lesson objectives;

At the end of this lesson, you should be able to;

• Explain what a saturated solution is

• Explain the meaning of solubility

Multiple Choice

TEST IT!

You have a test-tube of water. Are you able to dissolve more water or more sugar in the water?

• The water

• The sugar

• Doesn't matter

Multiple Choice

Page 76; A saturated solution......

• contains the maximum amount of solute

• cannot take any more solute

• has some undissolved substance in the container

• All of these

Multiple Choice

A solution with solute that dissolves until it is unable to dissolve anymore, leaving the undissolved substances at the bottom.

• Unsaturated solution

• Saturated solution

Multiple Choice

If the solution contains the maximum amount it can dissolve by a given amount of solvent, it is ___________

• Solubility

• Unsaturated

• Saturated

• Supersaturated

Multiple Select

A type of solution that contains less solute than the maximum amount it can dissolve.

• saturated solution

• unsaturated solution

Multiple Choice

Which of the following statements is true?

• B is a saturated solution

• A is a supersaturated solution

• C is an unsaturated solution

• None of the above

Multiple Choice

Which of the following best describes a supersaturated solution?

• a solution that contains the maximum amount of solute that is capable of being dissolved

• a solution that contains less than the maximum amount of solute that is capable of being dissolved.

• a solution that contains more than the maximum amount of solute that is capable of being dissolved.

• none of the above

Multiple Choice

You are given a 30 mL solution in a beaker. You add solute to the beaker and it

dissolves completely. What is the solution?

• A. Solubility

• B. Saturated solution

• C. Unsaturated solution

• D Supersaturated solution

Multiple Choice

Define the term soluble.

• Can dissolve in water

• Cannot dissolve in water

• Partially dissolves in water

Multiple Choice

Define the term insoluble.

• Can dissolve in water.

• Cannot dissolve in water.

• Partially dissolves in water.

Multiple Choice

The amount of solute actually dissolved in a given amount of solvent.

• dilution

• concentration

• saturated solution

• supersaturated mixture

Multiple Choice

Page 76; TRUE or FALSE

Every substance has the same solubility

• TRUE

• FALSE

Multiple Choice

The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

• solubility

• concentrated

• diluted

• surface area

Multiple Choice

Page 76;

Look at the table on page 76. Which of these two is more soluble?

• Sugar

• Salt

Multiple Choice

The mass of a solute that can dissolve in 100g of water is its.....

• Solubility

• Saturation

• Solution

• Solvent

Multiple Choice

Maria can dissolve 202 grams of sugar in 100g of water. What is the solubility os sugar?

• 100

• 202

Multiple Choice

Maria Reese can dissolve 36 grams of salt in 100g of water in a glass. What is the solubility of salt?

• 36

• 100

• 202

Multiple Choice

Salt is less soluble than sugar

• TRUE

• FALSE

Multiple Select

Page 76; Some examples of insoluble substances are;

• Chalk (Calcium carbonate)

• Sand (Silicon dioxide)

• Sugar

• Salt

Multiple Select

Page 77; How does temperature affect the solubility of sugar?

• The higher the temperature the less sugar you can dissolve

• The higher the temperature the more sugar you can dissolve

• The lower the temperature the more sugar you can dissolve

• The lower the temperature the less sugar you can dissolve

Multiple Choice

TRUE of FALSE;

Salt gets more soluble as the temperature of the solvent increases

• TRUE

• FALSE

Multiple Choice

Look at the graph on page 77;

How many substances show solubility decreasing with temperature?

• 1

• 2

• 5

• 7

Multiple Choice

Look at the graph on page 77;

Which substance shows solubility decreasing with increase in temperature?

• Cerium (III) Sulphate

• Potassium chlorate

• Potassium nitrate

• Calcium chloride

Multiple Select

Look at the graph on page 77;

Which substances show a constant / steady increase of solubility with increase in temperature?

• Sodium nitrate

• Lead nitrate

• Potassium chloride

• Calcium chloride

• Potassium chlorate

Multiple Select

Look at the graph on page 77;

Which substances show an exponential / speedy increase of solubility with increase in temperature?

• Potassium nitrate

• Lead nitrate

• Potassium chloride

• Calcium chloride

• Potassium chlorate

Multiple Choice

What is the most soluble salt?

• Potassium nitrite

• Potassium nitrate

Multiple Choice

A saturated solution;

• ...does not dissolve

• ....contains undissolved solute

• ....is the mass of a substance that dissolves in 100g of water

• ...is the solution that contains the greatest mass of solute that can dissolve

Multiple Choice

An insoluble substance;

• ...does not dissolve

• ....contains undissolved solute

• ....is the mass of a substance that dissolves in 100g of water

• ...is the solution that contains the greatest mass of solute that can dissolve

Multiple Choice

Solubility;

• ...does not dissolve

• ....contains undissolved solute

• ....is the mass of a substance that dissolves in 100g of water

• ...is the solution that contains the greatest mass of solute that can dissolve

Multiple Choice

A saturated solution ;

• ...does not dissolve

• ....contains undissolved solute

• ....is the mass of a substance that dissolves in 100g of water

• ...is the solution that contains the greatest mass of solute that can dissolve

Multiple Choice

An un-saturated solution ;

• ...is a solution that contains less than the maximum amount of solute that is capable of being dissolved

• ....contains undissolved solute

• ....is the mass of a substance that dissolves in 100g of water

• ...is the solution that contains the greatest mass of solute that can dissolve

Multiple Choice

A super saturated solution ;

• ...is a solution that contains less than the maximum amount of solute that is capable of being dissolved

• ....contains undissolved solute

• ....is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature

• ...is the solution that contains the greatest mass of solute that can dissolve