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Worksheets

Mixtures

Total questions: 49

Worksheet time: 48mins

Name
Class
Date
1.

What is a colloid?

a)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

b)

A type of mixture where liquid particles are dispersed into another liquid, often with the help of another binding substance.

c)

A mixture where the particles of a solid disperse but eventually settle at the top or bottom of the mixture over

time.

d)

A mixture with two substances that mix evenly. The one substance completely dissolves into the other.

2.

What is an emulsion?

a)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

b)

A type of mixture where liquid particles are dispersed into another liquid, often with the help of another binding substance.

c)

A mixture where the particles of a solid disperse but eventually settle at the top or bottom of the mixture over

time.

d)

A mixture with two substances that mix evenly. The one substance completely dissolves into the other.

3.

What is a suspension?

a)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

b)

A type of mixture where liquid particles are dispersed into another liquid, often with the help of another binding substance.

c)

A mixture where the particles of a solid disperse but eventually settle at the top or bottom of the mixture over

time.

d)

A mixture with two substances that mix evenly. The one substance completely dissolves into the other.

4.

What is a solution?

a)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

b)

A type of mixture where liquid particles are dispersed into another liquid, often with the help of another binding substance.

c)

A mixture with two substances that mix evenly. The one substance completely dissolves into the other.

d)

A mixture of two or more substances in the same phase that is uniform throughout.

5.

What is a heterogeneous mixture?

a)

A mixture with two substances that mix evenly.  The one substance completely dissolves into the other.

b)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

c)

A mixture of two or more substances that are not in the same phase, or one where the mixture is not uniform throughout.

d)

A mixture of two or more substances in the same phase that is uniform throughout.

6.

What is a homogeneous mixture?

a)

A mixture with two substances that mix evenly.  The one substance completely dissolves into the other.

b)

A mixture that does not settle into its component parts once it has been mixed, no matter how long it sits.

c)

A mixture of two or more substances that are not in the same phase, or one where the mixture is not uniform throughout.

d)

A mixture of two or more substances in the same phase that is uniform throughout.

7.

What is a mixture?

a)

This contains more than one type of particle.

b)

This is made of exactly one type of particle.

8.

What is a pure substance?

a)

This contains more than one type of particle.

b)

This is made of exactly one type of particle.

9.

What is separation?

a)

A mixture with two substances that mix evenly. The one substance completely dissolves into the other.

b)

The process of removing one part of a mixture from the rest by taking advantage of differences in their physical properties.

c)

A mixture where the particles of a solid disperse but eventually settle at the top or bottom of the mixture over

time.

d)

This contains more than one type of particle.

10.

Milk is an example of a heterogeneous mixture.

a)

True

b)

False

11.

Colloids are the exact same as suspensions.

a)

True

b)

False

12.

An emulsion is a mixture where a solid floats on top of a liquid and doesn’t mix completely.

a)

True

b)

False

13.

Gold is an example of a heterogeneous mixture.

a)

True

b)

False

14.

A colloid can be a mixture of solids, liquids, or gases.

a)

True

b)

False

15.

Filtration is used to separate undissolved solids from a liquid.

a)

True

b)

False

16.

Sand mixed with water is an example of what kind of mixture?

a)

Homogeneous mixture

b)

Suspension

c)

Colloid

d)

Emulsion

17.

What is matter?

a)

Any substance that has weight and takes up volume.

b)

A substance that contains only one type of particle.

c)

Any substance that has mass and takes up space.

d)

I don’t know, what’s the matter with you?

18.

What type of colloid is a gel?

a)

When liquid particles are dispersed into other liquid particles.

b)

When gas particles are dispersed into solid particles.

c)

When liquid particles are dispersed into solid particles.

d)

When liquid particles are dispersed into gas particles.

e)

When solid particles are dispersed into liquid particles.

19.

You use a flashlight on a mixture and notice that the light scatters and disperses. This helps you identify your mixture as…

a)

A homogeneous mixture.

b)

A solution.

c)

A pure substance.

d)

A heterogeneous mixture.

20.

You use a flashlight on a mixture and notice that the light passes completely through. This helps you identify your mixture as…

a)

A homogeneous mixture.

b)

A solution.

c)

A pure substance.

d)

A heterogeneous mixture.

21.

In a water-and-oil emulsion, what will happen to the oil?

a)

The oil will eventually band together and sink to the bottom.

b)

The oil will eventually band together and rise to the top.

c)

The oil will stay mixed throughout the water.

d)

The oil will float in the centre of the mixture.

22.

What type of substance do you add to certain kinds of mixtures to keep them from separating?

a)

An emulsion.

b)

An emulsifier.

c)

A solute.

d)

A binder.

23.

What is the difference between homogeneous mixtures and solutions?

a)

There is no difference, they are exactly the same.

b)

All solutions are homogeneous mixtures, but not all homogeneous mixtures are solutions. When a homogeneous mixture contains only one phase, then it is a solution. When it contains more than two phases, it is homogeneous.

c)

Air is an example of a homogeneous mixture of nitrogen, oxygen, carbon dioxide, and other gases present in air. It cannot be a solution because it does not have completely dissolved particles.

24.

What are the three phases of matter?

a)

solid

b)

liquid

c)

gas

d)

vapour

e)

mass

25.

What makes each type of colloid unique?

a)

The mix of particles and their properties.

b)

The mix of particles and if they can be separated or not.

c)

The mix of particles and the phase of matter the particles are in.

d)

All colloids are the same.

26.

What kind of colloid is popcorn?

a)

Foam

b)

Emulsion

c)

Gel

d)

Aerosol

e)

Sol

27.

What kind of colloid is mayo?

a)

Foam

b)

Emulsion

c)

Gel

d)

Aerosol

e)

Sol

28.

What kind of colloid is cheese?

a)

Foam

b)

Emulsion

c)

Gel

d)

Aerosol

e)

Sol

29.

What kind of colloid is fog?

a)

Foam

b)

Emulsion

c)

Gel

d)

Aerosol

e)

Sol

30.

What kind of colloid is paint?

a)

Foam

b)

Emulsion

c)

Gel

d)

Aerosol

e)

Sol

31.

What is an example of a homogeneous mixture?

a)

Salt

b)

Whipped cream

c)

Apple juice

d)

Milk

32.

What type of colloid is a foam?

a)

When liquid particles are dispersed into other liquid particles.

b)

When gas particles are dispersed into solid particles.

c)

When liquid particles are dispersed into solid particles.

d)

When liquid particles are dispersed into gas particles.

e)

When gas particles are dispersed into liquid particles.

33.

What type of colloid is an emulsion?

a)

When liquid particles are dispersed into other liquid particles.

b)

When gas particles are dispersed into solid particles.

c)

When liquid particles are dispersed into solid particles.

d)

When liquid particles are dispersed into gas particles.

e)

When gas particles are dispersed into liquid particles.

34.

What type of colloid is an aerosol?

a)

When liquid particles are dispersed into other liquid particles.

b)

When gas particles are dispersed into solid particles.

c)

When solid particles are dispersed into gas particles

d)

When liquid particles are dispersed into gas particles.

e)

When gas particles are dispersed into liquid particles.

35.

What type of colloid is a sol?

a)

When solid particles are dispersed into liquid particles.

b)

When gas particles are dispersed into solid particles.

c)

When solid particles are dispersed into gas particles

d)

When liquid particles are dispersed into solid particles.

e)

When gas particles are dispersed into liquid particles.

36.

What type of seperation is centrifugation?

a)

Separating by density

b)

Separating by particle size

37.

What type of seperation is picking apart?

a)

Separating by density

b)

Separating by particle size

38.

What type of seperation is filtration?

a)

Separating by density

b)

Separating by particle size

39.

What type of seperation is flotation?

a)

Separating by density

b)

Separating by particle size

40.

What type of seperation is settling?

a)

Separating by density

b)

Separating by particle size

41.

What type of seperation is chromatography?

a)

Separating by density

b)

Separating by particle size

42.

Describe the separation technique of chromatography, and give an example.

4 lines
43.

Describe the separation technique of centrifugation, and give an example.

4 lines
44.

Describe the separation technique of settling, and give an example.

4 lines
45.

Describe the separation technique of flotation, and give an example.

4 lines
46.

Describe the separation technique of filtration, and give an example.

4 lines
47.

Describe the separation technique of picking apart, and give an example.

4 lines
48.

Thinking about separation of mixtures, why do people wear masks to protect against COVID-19? Name the type of mixture the mask is separating, the separation technique, and if it is an example of separating by density or by particle size.

4 lines
49.

What type of mixture is in the picture above? Explain what is happening in each of the stages A, B, and C.

4 lines