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Grade 7 chapter 1 science

Total questions: 72

Worksheet time: 41mins

Name
Class
Date
1.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Heterogeneous mixture

b)

Pure substance

c)

Suspension

d)

Homogeneous mixture

2.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Hydrogen

3.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
4.
Which of the following is a pure substance? 
a)

Distilled Water

b)

Aluminum

c)

Gold

d)
ALL of them
5.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

6.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

7.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

8.

True or False: Elements and compounds are pure substances.

a)

True

b)

False

9.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
10.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

11.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
12.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
13.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
14.
Two substances physically combined and that appears the same throughout is classified as
a)
A homogeneous mixture
b)
A heterogeneous mixture
c)
An element
d)
  A compound
15.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

16.

This separation method is called...

a)

Magnetism

b)

Filtration

c)

Distillation

d)

Evaporation

17.

Which method can you use to separate sand and iron filings?

a)

Distillation

b)

Magnetism

c)

Filtration

d)

Evaporation

18.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
19.

A mixture that contains two or more substances uniformly combined

a)

heterogeneous mixture

b)

homogeneous mixture

c)

suspension

d)

colloid

20.

Matter is classified in...

a)

Elements & Compounds

b)

Homogeneous & Heterogeneous

c)

Colloids & Suspensions

d)

Pure substances & Mixtures

21.
a)
heterogeneous mixture
b)
homogeneous mixture
22.

[check all that apply] Pure substances include:

a)

Elements

b)

Homogeneous Mixtures

c)

Compounds

d)

Heterogeneous Mixtures

23.

An element is?

a)

Chemically combined

b)

Pure substances that can be broken down

c)

Pure substances that cannot be broken down into simpler substances

d)

One or more elements chemically combined.

24.

The properties of a compound are different from the elements that make them up.

a)

True

b)

False

25.

Oxygen is a

a)

Element

b)

Compound

26.

Water (H2O) is a

a)

Element

b)

Compound

27.

Salt (NaCl) is

a)

Mixture

b)

Compound

28.

Saltwater is

a)

Mixture

b)

Compound

29.

Chicken noodle soup is

a)

Homogeneous mixture

b)

Heterogeneous mixture

30.

A bottle of dishwashing detergent contains a clear, viscous liquid. The label has a long list of ingredients, including water, sodium lauryl sulfate, fragrance, and Blue dye #5.

What can you infer about the material in the bottle from this label and the appearance of the liquid?

a)

It is a pure substance.

b)

It is a compound.

c)

It is a heterogeneous mixture.

d)

It is a homogeneous mixture.

31.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Colloid

b)

Heterogeneous mixture

c)

Pure substance

d)

Suspension

e)

Homogeneous mixture

32.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
33.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

34.
A pure substance...
a)
Looks the same from every part you look 
b)
Looks different from every part you look
35.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
36.

Homogenous Mixtures are also known as ____________

a)

Colloids

b)

Solutions

c)

Suspension

d)

Mixtures

37.

_________ is the process by which liquids are turned into vapor (gas) by heating. This can be used to separate salt from water in seawater to make salt.

a)

Filtration

b)

Evaporation

c)

Sedimentation and Decantation

d)

Distillation

38.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
39.

Which of the following is a heterogeneous mixture?

a)

salt water

b)

sugar water

c)

soda

d)

beach sand

40.

An example of...

a)

mixture

b)

element

c)

compound

41.

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

a)

heterogeneous

b)

homogeneous

c)

pure

42.
The picture shown here is what type of mixture?
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
element
43.

Which of the following are examples of HETEROGENEOUS MIXTURES?


Select all that apply!

a)

bucket of Legos

b)

Pizza

c)

Copper

d)

NaCl

44.

Which of the following are examples of HOMOGENEOUS MIXTURES?


Select all that apply!

a)

Tacos

b)

Air

c)

Steel

d)

Chicken Noodle Soup

45.
Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?
a)
The salad and fruit drink are both mixtures.
b)
The salad and the fruit drink are both solutions.
c)
The fruit drink is a mixture because the ingredients can't be separated.
d)
The salad is a solution because the ingredients can't be separated.
46.

It refers to the space that matter occupies.

a)

volume

b)

mass

c)

weight

d)

density

47.

Matter is

a)

Anything that has volume

b)

Anything that has mass

c)

Anything that has mass and volume

48.

What state of matter does the picture below represent?

a)

solid

b)

liquid

c)

gas

d)

plasma

49.

What is a Solid?

a)

Matter that has a fixed shape and size.

b)

Matter that has a fixed size and no fixed shape

c)

Matter that has no fixed shape or size

d)

Matter that has no fixed shape and size

50.

The state of matter that keeps its shape and volume when it is placed in a different container is called ______.

a)

gas

b)

liquid

c)

solid

51.

The state of matter that expands to fill its container is called ______.

a)

gas

b)

liquid

c)

solid

52.

What is matter made up of?

a)

particles that are too large to be seen

b)

tiny butter particles

c)

particles that are too small to be seen

d)

tiny water particles

53.

Which state of matter has its own shape

a)

Gas

b)

Solid

c)

LIquid

54.

The diagram shows arrangement of particles in a

a)

Solid

b)

Liquid

c)

Gas

55.

Define a liquid.

a)

Matter that has fixed shape but no fixed volume

b)

Matter that has fixed shape and fixed volume

c)

Matter that has fixed volume, but no fixed shape

56.

The particles in the picture are tightly held together with very tiny movement. They have shape and fixed volume. Therefore, the picture represents _________.

a)

solid

b)

liquid

c)

gas

d)

plasma

57.

In which state of matter will there be the LARGEST space between molecules?

a)

Solid

b)

Liquid

c)

Gas

58.

What is a gas?

a)

Matter that has fixed shape but no fixed volume

b)

Matter that has no fixed shape and no fixed volume

c)

Matter that has no fixed shape but fixed volume

d)

compounds

59.

What state is represented in the gif?

a)

Solid

b)

Liquid

c)

Gas

60.

Which of the following are states of matter?

a)

Gas

b)

Solid

c)

Liquid

d)

Plasma

61.
Milk takes the shape of its container because it is a:
a)
solid
b)
liquid
c)
gas
62.
Molecules are closest together in a 
a)
Solid
b)
Liquid
c)
Gas
d)
plasma
63.

What is the process called when a solid changes to a liquid?

a)

Freezing

b)

Evaporation

c)

Melting

d)

Condensation

64.

What is the process called when a gas turns into a liquid?

a)

Condensation

b)

Melting

c)

Freezing

d)

Evaporation

65.

Which state of matter does not have a definite shape but does have a definite volume?

a)

Solid

b)

Liquid

c)

Gas

66.

What is the process called when a liquid changes into a gas?

a)

Freezing

b)

Evaporation

c)

Melting

d)

Condensation

67.

TRUE OR FALSE "Liquids don't have a fixed shape; solids do"

a)

TRUE

b)

FALSE

68.

Matter is made up of tiny particles or molecules.

a)

True

b)

False

69.

In solids, molecules do not move.

a)

True

b)

False

70.

The higher the temperature, the slower the molecules move.

a)

True

b)

False

71.

The lower the temperature, the slower the molecules move.

a)

True

b)

False

72.

Solids have their molecules have spaces despite them being tightly packed.

a)

True

b)

False

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