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Another test of pure grandeur

Total questions: 70

Worksheet time: 2hrs 1mins

Name
Class
Date
1.
What is a homogeneous mixture?
a)
a mixture that is the same throughout.
b)
a mixture that is made up of one type of atom.
c)
a mixture that is made up of one type of compound
d)
a mixture that cannot be separated through physical changes
2.

A homogeneous mixture is sometimes called a _______________.

a)

solution

b)

mechanical mixture

c)

solute

d)

pure substance

3.

Which of these common substances is a homogeneous mixture?

a)

12 grain bread

b)

granola bar

c)

orange juice with pulp

d)

maple syrup

4.
The building block of matter is a(n)___________________.
a)

mixture

b)

atom

c)

element

d)

substance

5.

Alex goes into the garden and digs up a shovel full of dirt. This is a _____________ mixture.

a)

homogeneous

b)

heterogeneous

c)

microgeneous

d)

hydrogeneous

6.
A ________________ is made up of one kind of particle throughout.
a)
compound          
b)
atom
c)
mixture 
d)
pure substance
7.

A substance, usually a liquid, that can dissolve another substance is a ___________________.

a)

solute

b)

solvent

c)

solution

d)

gas

8.

A substance that can be dissolved by substance is called a _____________.

a)

solute

b)

solvent

c)

solution

d)

mixture

9.
What are three states of matter we studied this year?
a)
solid, liquid, and juice
b)
metal, solid and liquid
c)
water, air and plasma
d)
solid, liquid, and gas
10.
Which form of matter take the shape of a container like this juice?
a)
liquid
b)
solid
c)
glass
d)
gas
11.
Which form of matter fills the space like it has in the balloon?
a)
liquid
b)
string
c)
solid
d)
gas
12.

What is happening when the water in my water bottle in the freezer goes from a liquid state to a solid state?

a)
melting
b)
evaporating
c)
freezing
d)

boiling

13.
A gas ________________________.
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
d)
is always flammable
14.
At higher temperatures _________________.
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
d)
particles move closer together
15.
Which state of matter has molecules that vibrate the least?
a)
plasma
b)
water
c)
gas
d)
solid
16.
What state of matter does the particle diagram show?
a)
solid
b)
liquid
c)
gas
d)
plasma
17.
The particle theory states that matter is made up of what?
a)
crystals
b)
cells
c)
particles
d)
strings
18.
Most substances you will come in contact with are mixtures. Mixtures contain at least two ___________________.
a)
alloys
b)
states of matter
c)
pure substances
d)
solutes
19.
In a solution, one substance has _________ into another.
a)
partially mixed
b)
not mixed
c)
disolved
d)

evaporated

20.
Another name for a heterogeneous mixture is a ___________________.
a)
solution
b)
dilute
c)
solvent
d)
mechanical mixture
21.

How many known states of matter are there?

a)

3

b)

over 3

c)

under 3

22.

The air around you is a mixture of gases.

a)

True

b)

False

23.

Is blood a mixture?

a)

No

b)

Yes

24.

Chicken noodle soup is an example of a

a)

homogeneous mixture

b)

heterogeneous mixture

c)

pure substance

d)

solution

25.

A seventh grade class has collected empty cans for recycling. They have several large bins with aluminum and steel cans, all mixed together. The two types of cans must be separated. Which of the following techniques could the students use to separate the two types of cans?

a)

Place the cans in water, and the aluminum cans will float

b)

Crush the cans to make them easier to carry

c)

Test the cans for their ability to conduct electricity

d)

Use a magnet to find and remove the steel cans

26.
Sugar is added to water and stirred until it completely dissolves. Which of the following correctly describes something that has happened to the sugar?
a)
the mass of the sugar increased
b)
the mass of the sugar decreased
c)
the sugar disappeared and no longer exists
d)
the sugar is evenly distributed in the water
27.
A material that allows liquids to pass through it, while very small solids remain behind
a)
Filter
b)
Sieve
c)
Funnel
d)
Spoon
28.

When a substance begins to melt its molecules....

a)

Speed up and spread out

b)

Slow down and come together

c)

Speed up and come together

d)

Remain the same

29.

When we put a substance in water and stir it to see if it dissolves we are testing for_______________________.

a)

relative density

b)

solubility

c)

mass

d)

temperature

30.

As particles are exposed to colder temperatures they _____

a)

speed up and move further apart

b)

slow down and move closer together

c)

speed up and move closer together

d)

slow down and move farther apart

31.

What is MATTER?

a)

Anything that has MASS

b)

Anything that takes up SPACE

c)

Anything that has MASS and takes up SPACE

d)

Anything that DOES NOT have mass or take up space

32.

Floating, settling, sorting, sieving and filtering are all ways that one could_______.

a)

separate mechanical mixtures

b)

separate pure substances

c)

dilute fluids

d)

create alloys

33.

Which separation method is not normally used in sewage treatment?

a)

settling

b)

sieving

c)

using magnets

d)

floating

34.

True or False: Water is considered a universal solvent.

a)

True

b)

False

35.

When you are making a Kool-aid solution, which one of the ingredients is considered the solute and why?

a)

The wooden spoon because it does the mixing.

b)

The water because it is dissolving the powder.

c)

The kool-aid powder because it is being dissolved.

d)

The kool-aid powder because it is in the largest volume.

36.

Matter can be categorized as __________.

a)

an element or compound

b)

homogeneous or heterogeneous mixture

c)

a pure substance or mixture

d)

a compound or mixture

37.
Which one of the following would you use to separate sand from iron filings?
a)

a magnet

b)
filter paper
c)

a steel sieve

d)

evaporation

38.

Which of the following pairs of substances may best be separated through distillation?

a)
 sand and soil
b)
water and soil
c)
salt and sand
d)
 water and alcohol
39.

What is the concentration of the sugar and water solution?

a)

6g/200ml

b)

3g/100ml

c)

100ml/3g

d)

200ml/6g

40.

What is the concentration of the baking soda and water solution?

a)

4.5g/50ml

b)

4.5g/100ml

c)

9g/100ml

d)

9g/50ml

41.

A solution where no more solute can be dissolved is called a ___________________?

a)

saturated solution

b)

unsaturated solution

c)

supersaturated solution

d)

nonsaturated solution

42.

A solution in which more solute can be dissolved is called a ___________________?

a)

saturated solution

b)

unsaturated solution

c)

supersaturated solution

d)

nonsaturated solution

43.

Which of the following are examples of air pollution?

a)

Littering, putting garbage in a landfill

b)

Spilling oil in the oceans

c)

Burning fossil fuels, campfire smoke

d)

Filtered air blowing out of a clean air filter.

44.

Which of the following is an example of water pollution?

a)

Littering, putting garbage in a landfill

b)

The Great Pacific Garbage Patch

c)

Burning fossil fuels, campfire smoke

d)

Filtered air blowing out of a clean air filter.

45.

Which of the following is an example of land pollution?

a)

Littering, putting garbage in a landfill

b)

Spilling oil in the oceans

c)

Burning fossil fuels, campfire smoke

d)

Filtered air blowing out of a clean air filter.

46.

What are natural resources?

a)

Natural resources are materials or substances that are man made.

b)

Natural resources are materials or substances found in nature that can be used for daily life.

c)

Natural resources are materials or substances found in only the ocean.

d)

Natural resources are materials or substances that are used by only scientists.

47.

Why is it important to repeat experiments several times?

a)

If you repeat experiments several times, you can get the least accurate results.

b)

If you repeat experiments several times, you can get the most accurate results.

c)

If you repeat experiments several times, you can get better at doing it.

d)

If you repeat experiments several times, you don't know what you are doing.

48.

What is a harmful substance in soil, water, or atmosphere?

a)

environment

b)

engineer

c)

technology

d)

pollution

49.

Sand and gravel may be separated from each other through using a __________.

a)

a filter funnel

b)

a sieve

c)

an evaporating basin

d)

a distillation

50.

The best way to separate trail mix would be:

a)

filter

b)

by hand

c)

sieve

d)

evaporation

51.

What tool is this?

a)

sieve

b)

filter

c)

spoon

d)

sifter

52.

This type of energy is released when a pure substance, like uranium, splits apart.

a)

electric energy

b)

nuclear energy

c)

hydroelectric energy

d)

geothermal energy

53.

A term used to describe pure substances whose particles naturally split into smaller particles, releasing energy as they break apart.

a)

iron

b)

radioactive

c)

magnetic

d)

heavy metal

54.

An electric generator is a _____________.

a)

machine used to produce electricity

b)

machine used to separate sewage

c)

machine used to generate light

d)

machine that uses uranium to create energy

55.

What are two risks of nuclear power?

a)
Radioactive waste and potential for nuclear accidents
b)
Air pollution and greenhouse gas emissions
c)
Noise pollution and visual impact
d)
High cost and limited availability of uranium
56.

What are two benefits of nuclear power?

a)
Causes air pollution and water contamination
b)
Expensive and unreliable
c)
High greenhouse gas emissions and low energy output
d)
Low greenhouse gas emissions and high energy output
57.

Give an example of a solid solution.

a)

Granola Bar

b)
Wood
c)

Concrete

d)
Brass
58.

Which method would best separate a mixture of sand and salt?

a)

Use a magnet

b)

Freeze the mixture

c)

Evaporate the water after dissolving the salt

d)

Use a sieve

59.

Identify which images are PURE SUBSTANCES! (Check all that apply) : )

a)
b)
c)
d)
e)
60.

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

a)
b)
c)
d)
61.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Helium

62.

Which substances, when mixed together, maintain their original physical properties?

a)

gravel and water

b)

wood chips, water and sand

c)

sand and water

d)

all of the above

63.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

64.

Bronze is an alloy of copper and _____.

a)

Steel

b)

Iron

c)

Tin

d)

Carbon

65.

What is fractional distillation?

a)

a process used to separate crude oil

b)

a process used to burn up fuels

c)

a way to make different products

d)

how oil is extracted from the ground

66.

What is a sewage treatment plant?

a)

The place where water is cleaned, filtered and tested before re-entering the water cycle.

b)

The place where water is cleaned, filtered and tested before going to our houses.

c)

The network of pipes that carry sewage (dirty water) from our houses.

d)

The place where water is bottled for drinking.

67.

What type of living things eat the organic matter in the sewage?

a)

Plants

b)

Animals

c)

Bacteria

d)

Fungi

68.

In London, the water that is clean returns to ______________.

a)

Our taps.

b)

The sea.

c)

The Thames River.

d)

The reservoir.

69.

What is the first step of sewage treatment?

a)

Clarification

b)

Sieving

c)

Settling

d)

Aeration

70.
What are two things that water treatment plants need to do?
a)
Clean and disinfect the water
b)
Boil and evaporate the water
c)
Remove the animals and plants
d)
Add chemicals and remove pesticides

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