Mixtures and Solutions: Interactive Learning Quizzes for Year 6 Science

Question 1

Which of the following is NOT a mixture? A mixture is a combination of two or more substances that are not chemically bonded.

Accepted Answer

Pure water (not a mixture, as it contains only one substance)

Answer

Salt water (a mixture of salt and water)

Answer

Air (a mixture of gases)

Answer

Sand and water (a mixture of two solids)

Question 2

Which method can be used to separate a mixture of sand and salt? Different methods can be used to separate mixtures based on the properties of their components.

Accepted Answer

Filtration (using a filter to separate solids from liquids)

Answer

Distillation (used to separate liquids with different boiling points)

Answer

Evaporation (used to separate a liquid from a solid)

Answer

Chromatography (used to separate substances based on their different rates of movement through a medium)

Question 3

What is the name of the process by which a solid turns directly into a gas? Sublimation is the process by which a solid turns directly into a gas without passing through the liquid phase.

Accepted Answer

Sublimation (a solid turns directly into a gas)

Answer

Evaporation (a liquid turns into a gas)

Answer

Condensation (a gas turns into a liquid)

Answer

Deposition (a gas turns directly into a solid)

Question 4

Which of these is a solution, where one substance is evenly distributed throughout another?

Accepted Answer

Salt and water

Answer

Sand and water

Answer

Oil and water

Question 5

Which of these is NOT a characteristic of a mixture?

Accepted Answer

Components are chemically combined

Answer

Components can be separated by physical means

Answer

Components retain their original properties

Answer

Variable composition

Question 6

A solution with the solute present in the smallest possible amount is called a:

Accepted Answer

Dilute solution

Answer

Concentrated solution

Answer

Saturated solution

Answer

Supersaturated solution

Question 7

Which method is used to separate solids from liquids?

Accepted Answer

Filtration

Answer

Distillation

Answer

Evaporation

Answer

Chromatography

Question 8

Which of the following is a homogeneous mixture?

Accepted Answer

Salt and water

Answer

Sand and water

Answer

Oil and water

Answer

Metal shavings and sawdust

Question 9

In a saltwater solution, what is the solvent?

Accepted Answer

Water

Answer

Salt

Answer

Both salt and water

Answer

Neither salt nor water

Question 10

Which of these does NOT affect the solubility of a substance?

Accepted Answer

Magnetic field strength

Answer

Temperature

Answer

Surface area

Answer

Pressure

Question 11

What is the main use of chromatography?

Accepted Answer

Separating different substances in a mixture

Answer

Measuring the concentration of a solution

Answer

Purifying water

Answer

Identifying the structure of a molecule

Question 12

Which of these mixtures can you easily see the different parts of?

Accepted Answer

Sand and water

Answer

Salt dissolved in water

Answer

Air

Answer

Vinegar

Question 13

Which of the following is NOT a characteristic of solutions?

Accepted Answer

Cannot be separated by physical means

Answer

Homogeneous

Answer

Clear

Answer

Can be separated by physical means

Question 14

Which of the following is a heterogeneous mixture?

Accepted Answer

Muddy water

Answer

Salt water

Answer

Air

Answer

Copper sulphate solution

Question 15

Which of the following is a mixture that cannot be separated by physical means?

Accepted Answer

Iron and sulphur

Answer

Sand and water

Answer

Salt and water

Answer

Oil and water

Question 16

What is the name of the substance that dissolves in a solvent?

Accepted Answer

Solute

Answer

Solvent

Answer

Mixture

Answer

Solution

Question 17

Which of the following is a method of separating a mixture of liquids with different boiling points?

Accepted Answer

Distillation

Answer

Filtration

Answer

Chromatography

Answer

Evaporation

Question 18

What is the name of the clear liquid that forms at the top of the condenser during distillation?

Accepted Answer

Distillate

Answer

Solvent

Answer

Solute

Answer

Mixture

Question 19

What is the name of the process by which a solid changes directly into a gas without passing through the liquid state?

Accepted Answer

Sublimation

Answer

Melting

Answer

Evaporation

Answer

Condensation

Question 20

Which of the following is NOT a mixture?

Accepted Answer

Pure gold

Answer

Salt water

Answer

Sugar solution

Answer

Air

Question 21

What is the process of changing a gas into a liquid called?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Distillation

Answer

Sublimation

Question 22

What is the main purpose of distillation?

Accepted Answer

To separate a mixture of liquids

Answer

To separate a mixture of solids

Answer

To separate a mixture of gases

Answer

To separate a mixture of solids and liquids

Question 23

Which of the following is a physical change?

Accepted Answer

Melting ice

Answer

Burning wood

Answer

Rusting iron

Answer

Digesting food

Question 24

What is the name of the process by which a liquid changes directly into a solid without first becoming a gas?

Accepted Answer

Freezing

Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Question 25

Which of the following is NOT a mixture?

Accepted Answer

Pure water

Answer

Salt water

Answer

Air

Answer

Chocolate cake

Question 26

Which of the following is a solution?

Accepted Answer

Salt and water

Answer

Oil and water

Answer

Sand and water

Answer

Air

Question 27

Which of the following is a property of a saturated solution?

Accepted Answer

It contains the maximum amount of dissolved solute.

Answer

It can dissolve more solute.

Answer

It is a mixture of two liquids.

Answer

It has a higher concentration of solute than an unsaturated solution.

Question 28

What is the process by which a solid turns directly into a gas without first becoming a liquid called?

Accepted Answer

Sublimation

Answer

Condensation

Answer

Evaporation

Answer

Deposition

Question 29

What is the term for a mixture that contains particles that are evenly distributed throughout?

Accepted Answer

Homogeneous mixture

Answer

Heterogeneous mixture

Answer

Colloid

Answer

Suspension

Question 30

Which of the following is NOT a method for separating a mixture of oil and water?

Accepted Answer

Filtration

Answer

Decantation

Answer

Distillation

Answer

Evaporation

Question 31

What is the name of the solid that forms when a solution becomes saturated?

Accepted Answer

Precipitate

Answer

Filtrate

Answer

Residue

Answer

Solute

Question 32

Which of these describes a heterogeneous mixture?

Accepted Answer

A mixture where you can easily see different parts.

Answer

A mixture that looks the same everywhere, even under a microscope.

Answer

A mixture that is completely clear.

Answer

A mixture that can't be separated by simple methods.

Question 33

Which method separates a mixture of colored dyes by their different speeds as they move through a substance?

Accepted Answer

Chromatography

Answer

Filtration

Answer

Distillation

Answer

Evaporation

Question 34

Which step is not a part of the distillation process?

Accepted Answer

Filtering the mixture to remove impurities

Answer

Heating the mixture to turn it into a gas

Answer

Cooling the gas to turn it back into a liquid

Answer

Collecting the distilled liquid

Question 35

Which property is unique to solutions?

Accepted Answer

Components are evenly distributed

Answer

Components can be separated by filtration

Answer

Components settle over time

Answer

Mixture is cloudy or opaque

Question 36

Which of the following methods can be used to separate a mixture of sand and water?

Accepted Answer

Filtration

Answer

Sublimation

Answer

Distillation

Question 37

Which of the following is a solution?

Accepted Answer

Air

Answer

Salad

Answer

Granite

Question 38

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Answer

Vinegar

Answer

Air

Answer

Salt water

Question 39

Which of the following is a saturated solution?

Accepted Answer

A solution where no more solute can dissolve at a given temperature

Answer

A solution that has a precipitate

Answer

A solution that is clear and transparent

Question 40

Which of the following is a colligative property?

Accepted Answer

Freezing point depression

Answer

Solubility

Answer

Density

Answer

Viscosity

Question 41

Which of the following is a real-life application of solutions?

Accepted Answer

Preparing food

Answer

Generating electricity

Answer

Building bridges

Answer

Making clothes

Question 42

Which of the following is a mixture?

Accepted Answer

Salt water

Answer

Iron filings

Answer

Pure water

Answer

Gold

Question 43

Which of the following is a solution?

Accepted Answer

Sugar dissolved in water

Answer

Sand mixed with water

Answer

Salt and pepper

Answer

Oil and water

Question 44

Which is a property of a solution?

Accepted Answer

The solute is evenly distributed throughout the solvent.

Answer

The mixture is cloudy.

Answer

The mixture can be separated by filtration.

Question 45

What is a use of chromatography?

Accepted Answer

Separating dyes in ink

Answer

Measuring the pH of a solution

Answer

Purifying water

Answer

Determining the melting point of a substance