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CHEMISTRY TEST TERM 3

Total questions: 118

Worksheet time: 2hrs 17mins

Name
Class
Date
1.
The chemical compound of water is
a)
HO
b)
H2O
c)
H3O
d)
HO2
2.

Water is a polar molecule because?

a)

It is only found at the Earth's poles

b)

The hydrogen atoms have a slight positive charge and the oxygen a slight negative charge.

c)

The hydrogen atoms have a slight negative charge and the oxygen a slight positive charge.

d)

It has no overall charge.

3.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
4.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
5.
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
6.
What is happening when my ice cream changes from a solid to a liquid?
a)
freezing
b)
melting
c)
burning
d)
evaporation
7.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
8.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
9.
How many carbon atoms are there in a methane molecule? 
a)
0
b)
1
c)
4
d)
5
10.
What is the total number of atoms in an ammonia (NH3) molecule?
a)
1
b)
2
c)
3
d)
4
11.
How many hydrogen atoms are in a molecule of glucose/sugar (C6H12O6)?
a)
6
b)
12
c)
18
d)
24
12.
On a hot summer day chocolate candy can melt in your pocket.  How can you get the chocolate to return to a solid?
a)
add heat
b)
leave it in your pocket
c)
cool it in the refrigerator
d)
leave it outside
13.

What is the difference between water vapour and steam?

4 lines
14.

Objects with like charges (a)  

15.

Objects with unlike charges (a)  

16.

Water molecules are attracted to each because

a)

the oxygen is slightly negative and attracts the slightly positive hydrogen atom

b)

the oxygen is slightly positive and attracts the slightly positive hydrogen atom

c)

the oxygen is slightly negative and attracts the slightly negative hydrogen atom

d)

the oxygen is slightly positive and attracts the slightly negative hydrogen atom

17.

Which state of matter has no definite shape and no definite volume?

a)

Gas

b)

Solid

c)

Liquids and Gases

d)

Liquid

18.

Liquids have the ability to flow because

a)

There are strong forces of attraction between the particles

b)

Their particles are arranged in a regular pattern

c)

Their particles can slide over each other

d)

Their particles are very far apart

19.

Evaporation is the change in state of a

a)

gas to a liquid

b)

gas to a solid

c)

solid to a liquid

d)

liquid to a gas

20.

Which one of the following is not a property of a solid?

a)

Definite color

b)

Definite mass

c)

Definite volume

d)

Definite shape

21.

The boiling point of a substance is the temperature at which it changes from

a)

a liquid to a gas

b)

a liquid to a solid

c)

a gas to a solid

d)

a solid to a liquid

22.

Which one of the following is not a property of gases?

a)

They have a definite mass

b)

They have no definite shape

c)

They have a definite volume

d)

They can diffuse

23.

In which state are the distances between the particles greatest?

a)

Both gas and liquid

b)

Liquid

c)

Gas

d)

Solid

24.

Which one of the following is a state of matter?

a)

Liquid

b)

Creature

c)

Particle

d)

Air

25.

The process of gathering information about our world is

a)

data

b)

observation

c)

science

26.

The ability to do work is

a)

efficiency

b)

energy

c)

power

27.

The study of matter and energy is not

a)

Physical Science

b)

Physics

c)

Chemistry

d)

Earth Science

e)

Biology

28.

Air is made up of a number of gases. Name the gas found in air that is useful for the process of respiration.

a)

nitrogen

b)

oxygen

c)

water vapor

d)

carbon dioxide

29.

Nitrogen is a gas found in air. What percentage of the air is made up of nitrogen?

a)

78 %

b)

21%

c)

0.04%

d)

0.06%

30.

Which property of air is demonstrated by the following diagram?

a)

Air takes up space

b)

Air exerts pressure

c)

Air has mass

31.

A colorless and odorless gas is captured and contained in a test tube. Which item or items is used to test this unknown gas for oxygen?

a)

a cup, water and a piece of cardboard

b)

marble chips and hydrochloric acid

c)

a glass straw and lime water

d)

a glowing splint

32.

Which number shows decomposition?

a)

1

b)

2

c)

5

d)

6

33.

Which process removes carbon dioxide out of the air?

a)

combustion

b)

decomposition

c)

photosynthesis

d)

respiration

34.

Which of the choices below are uses of nitrogen?

a)

moisture

b)

produces protein

c)

photosynthesis

d)

fertilizers

35.

Which gas DOES NOT support combustion?

a)

nitrogen

b)

oxygen

c)

carbon dioxide

d)

water vapor

36.

Carbon dioxide is a:

a)

compound

b)

element

c)

mixture

d)

molecule

37.

Which is a use of carbon dioxide

a)

used in respiration

b)

used for life support

c)

used in fire extinguishers

d)

used to make fertilizers

38.

how many atoms make up a molecule of carbon dioxide ( CO2)?

a)

1

b)

2

c)

3

d)

4

39.

Which two substances are combined to make carbon dioxide in the lab?

a)

hydrochloric acid and calcium carbonate

b)

hydrochloric acid and calcium chloride

c)

water and calcium chloride

d)

water and carbon dioxide

40.

What happens when salty water is boiled?

a)

The salt becomes a new compound and water evaporates as it has a low boiling point

b)

The water evaporates and the salt remains in the beaker as it has a high melting point

c)

The water becomes a new compound and evaporates while salt remains in the beaker

d)

The water will disappear and the salt remains in the beaker as it is a solid

41.

The process used to separate heterogeneous mixtures of solids and liquids is called

a)

filtration

b)

crystallization

c)

distillation

d)

chromatography

42.

Complete the sentence:

___________ allows to separate the fine flour particles from bigger impurities (lumps).

a)

Filtration

b)

Decantation

c)

Sieving

d)

Magnetism

43.

Which of the following mixtures can be separated by Evaporation?

a)
b)
c)
d)
44.

Linda is cooking rice for dinner. Her mother asked her to washed the rice grain before she put it into fire. What separation of mixtures she should use?

a)

Evaporation

b)

Distillation

c)

Chromatography

d)

Decantation

45.

Which of the following mixtures can be separated using Decantation?

a)
b)
c)
d)
46.

Which can be separated using Magnetism?

a)
b)
c)
d)
47.

What is the difference between filtration and Sieving?

a)

Filtration is separating liquid from solid components while sieving is separating solid mixtures with different particle size.

b)

Filtration is separating solid mixtures with different sizes while sieving is separating liquid from solid components.

c)

Filtration is separating magnetic from non-magnetic substances while sieving is separating immiscible from non-miscible mixtures.

d)

Filtration is separating liquids with different boiling points while sieving is separating liquid from solid substances using filter.

48.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
49.

A mixture is a combination of elements where no ___________ reaction takes place

a)

physical

b)

chemical

50.

What is an example of a homogeneous mixture?

a)

A mixture of oil and water

b)

A mixture of sand and water

c)

A mixture of iron filings and sulfur

d)

A solution of salt and water

51.

Give an example of a heterogeneous mixture.

a)

Milk

b)

Pure water

c)

Sugar

d)

Salad

52.

What are the properties of homogeneous mixtures?

a)

Visible boundaries between the substances

b)

Non-uniform composition

c)

The properties of homogeneous mixtures include uniform composition, even distribution of components, and no visible boundaries between the substances.

d)

Uneven distribution of components

53.

List the properties of heterogeneous mixtures.

a)

Heterogeneous mixtures are always in a gaseous state

b)

The properties of heterogeneous mixtures include the ability to be separated by physical means, such as filtration or settling, and the components do not have a uniform composition throughout the mixture.

c)

The components of heterogeneous mixtures have a uniform composition throughout the mixture

d)

Heterogeneous mixtures cannot be separated by physical means

54.

Name a common homogeneous mixture found in households.

a)

Saltwater

b)

Pepperjuice

c)

Sugarmilk

d)

Mudwater

55.

Identify a heterogeneous mixture commonly found in nature.

a)

Soil

b)

Pure water

c)

Iron

d)

Air

56.

How do the particles in a homogeneous mixture distribute?

a)

Evenly throughout the mixture

b)

Only at the bottom of the mixture

c)

Only at the top of the mixture

d)

In random clumps within the mixture

57.

Explain the distribution of particles in a heterogeneous mixture.

a)

Particles in a heterogeneous mixture are only found in the top layer and cannot be separated by physical means.

b)

Particles in a heterogeneous mixture are evenly distributed and can only be separated by chemical means.

c)

Particles in a heterogeneous mixture are unevenly distributed and can be separated by physical means.

d)

Particles in a heterogeneous mixture are evenly distributed and cannot be separated by physical means.

58.

What are the characteristics of a homogeneous mixture?

a)

Uniform composition and properties throughout

b)

Uneven distribution of substances

c)

Varied appearance and texture

d)

Different composition and properties throughout

59.

Describe the characteristics of a heterogeneous mixture.

a)

A heterogeneous mixture contains only one type of substance and cannot be separated by physical means.

b)

A heterogeneous mixture has no visible differences between substances or phases and cannot be separated by physical means.

c)

A heterogeneous mixture has uniform composition and cannot be separated by physical means.

d)

A heterogeneous mixture has visibly different substances or phases and can be separated by physical means.

60.

What are the physical properties of a homogeneous mixture?

a)

Different composition and inconsistent physical properties throughout the mixture.

b)

Visible separation of components and varying physical properties.

c)

Uniform composition and consistent physical properties throughout the mixture.

d)

Unpredictable composition and unstable physical properties.

61.

What are the physical properties of a heterogeneous mixture?

a)

The physical properties of a heterogeneous mixture are uniform throughout the sample

b)

All substances in a heterogeneous mixture are evenly distributed

c)

Heterogeneous mixtures have consistent color, texture, and density

d)

The physical properties of a heterogeneous mixture can vary throughout the sample, such as different colors, textures, and densities.

62.

Provide an example of a homogeneous mixture in the field of chemistry.

a)

Sand and water

b)

Iron filings and sulfur

c)

Sugar and sand

d)

Salt water

e)

Vinegar and oil

63.

Give an example of a heterogeneous mixture in the field of biology.

a)

Milk

b)

Blood

c)

Salad

d)

Air

64.

How can you separate the components of a homogeneous mixture?

a)

Adding more components to the mixture

b)

Shaking the mixture vigorously

c)

Using a hammer to break the mixture into pieces

d)

Using techniques such as filtration, distillation, chromatography, or evaporation.

65.

The term pollution has been derived from the Latin word (a)  

66.

Does smoke from factories cause air pollution ?

a)

Yes

b)

No

67.

When carbon monoxide mixes with haemoglobin present in our blood , it forms :

a)

carbon haemoglobin

b)

carbony haemoglobin

c)

carboxy haemoglobin

d)

none of the above

68.

Acid rain affects

a)

minerals in soil

b)

statues made up of marbles

c)

aquatic life

d)

gold ornaments

69.

Which gas is produced while Coal is burnt as a domestic fuel ?

(a)  

70.

Name the gas :

It is mainly produced by combustion of petrol or gasoline in automobiles.

(a)  

71.

What is smog made up of ?

a)

only smoke

b)

only fog

c)

both smoke and fog

d)

neither smoke nor fog

72.

Carbon monoxide is formed by

a)

combustion of paper

b)

complete combustion of fuels

c)

incomplete combustion of fuels

d)

all of the above

73.

All substances that contaminates air are called air pollution.

a)

True

b)

False

74.

Vanmohatsav is celebrated in the month of -

a)

September

b)

August

c)

July

d)

June

75.

According to the World Health Organization (WHO), how many people die every year from air pollution?

a)

Ten million

b)

Five million

c)

Seven million

d)

Twelve million

76.

What is one of the steps suggested to improve air quality?

a)

Use more air conditioners

b)

Reduce driving

c)

Increase driving

d)

Burn more wood

77.

What is the greenhouse effect caused by?

a)

Methane

b)

Wildfires

c)

Dust storms

d)

Carbon monoxide

78.

Where do harmful chemicals contributing to air pollution come from?

a)

All of the above

b)

Coal power plants

c)

Manufacturing plants

d)

Cars and trucks

79.

What is one way to reduce the amount of waste going into landfills?

a)

Composting food waste

b)

Burning more trash

c)

Throwing everything in the trash

d)

Not recycling

80.

What is the second most common greenhouse gas emitted from landfills?

a)

Methane

b)

Sulfur dioxide

c)

Carbon monoxide

d)

Nitrogen dioxide

81.

What is the main source of carbon monoxide emissions in the United States?

a)

Air conditioners

b)

Cars and trucks

c)

Factories

d)

Landfills

82.

What is one suggestion to reduce pollution from burning wood for heat?

a)

Use propane instead

b)

Burn more wood

c)

Use kerosene lamps

d)

Burn leaves

83.

What is the percentage of gases from landfills made up of carbon monoxide?

a)

25%

b)

50%

c)

75%

d)

100%

84.

What is one way to extend the life of items and reduce landfill waste?

a)

Not reusing items

b)

Recycling

c)

Throwing items away

d)

Burning items

85.

What is the most common greenhouse gas emitted from landfills?

a)

Methane

b)

Sulfur dioxide

c)

Carbon monoxide

d)

Nitrogen dioxide

86.

Which of the following is a major contributor to indoor air pollution?

a)

Cleaning products

b)

Outdoor air

c)

Plants

d)

Windows

87.

What is the primary source of pollution in urban areas?

a)

Factories

b)

Forests

c)

Rivers

d)

Mountains

88.

The contamination of air due to the presence or introduction of a dangerous substance describes:

a)

Water Pollution

b)

Primary Pollutant

c)

Air Pollution

d)

Point Source Pollution

89.

Where does most of the air pollution come from?

a)

Solar and Wind energy

b)

Forest Fires and Cities

c)

Planting trees and Agriculture

d)

Vehicles and Industry

90.

Which of the following is an example of a primary pollutant?

a)

Oxygen

b)

Helium

c)

Carbon Dioxide

d)

Ozone

91.

______________ is a pollutant that forms in the atmosphere by chemical reactions with primary air pollutants.

a)

Primary Pollutant

b)

Secondary Pollutant

c)

Point Source Pollution

d)

Nonpoint Source Pollution

92.

TRUE or FALSE: Air Pollution is a problem for humans and the environment.

a)

True

b)

False

93.

TRUE or FALSE: Air Pollution is a problem for humans and the environment.

a)

True

b)

False

94.

The contamination of water, usually as a result of human activities is which of the following?

a)

Air Pollution

b)

Water Pollution

c)

Nonpoint Source Pollution

d)

Primary Pollutant

95.

All of the following are examples of causes for water pollution except:

a)

Household Waste

b)

Industrial Waste

c)

Oil Spill

d)

Solar Energy

96.

All of the following are effects of water pollution except:

a)

Clean water

b)

Animals and Plants dying

c)

Contamination of drinking water

d)

Destruction of ecosystems

97.

In the picture, which of the following is an example of Point source pollution?

a)

City Streets

b)

Rural Homes

c)

Cropland

d)

Factory

98.

How would you describe Nonpoint source pollution?

a)

Pollution in the air

b)

Pollution from one place

c)

Pollution from many places

d)

Pollution of the water

99.

Water pollution occurs when:

a)

Harmful substances enter a water supply

b)

Industries dispose of waste safely and correctly.

c)

Industries cut costs with waste disposal.

d)

None of the above.

100.

too much phosphate in water is what category of water pollution?

a)

organic

b)

inorganic

c)

nutrient

d)

heat

101.

which is a category of water pollution?

a)

sediment

b)

medical

c)

food

d)

dihydrogen monoxide

102.

Why do algae blooms happen?

a)

there are too many nutrients in the water

b)

there are too many fish in the water

c)

there is not enough turbidity in the water

d)

all of these options

103.

what is true about eutrophication in lakes and other bodies of water?

a)

it is always natural

b)

it is always artificial

c)

it can cause too much algae to grow

d)

none of these are true

104.
Which of the following does NOT cause water pollution?
a)
oil spills
b)
garbage
c)
fertilizers from farms
d)
smoke
105.

A rapid growth of algae could lead to:

a)

A reduction of oxygen levels in the water.

b)

Water that can support more life.

c)

Waters that are devoid of life.

d)

An increase in oxygen levels.

106.

There is nothing we can do to stop water pollution.

a)

True

b)

False

107.

We can prevent water pollution by:

a)

Reduce the use of plastic.

b)

Properly dispose of chemicals.

c)

Clean up after your animals.

d)

All of the above

108.

Who pollutes the ocean the most?

a)

Marine Animals

b)

Humans

c)

Land Animals

109.

How does plastic end up reaching and entering the ocean from land?

a)

Littering in towns and cities

b)

Dumpsites near waterways and oceans

c)

People littering on beaches

d)

All of the above

110.

What happens to plastic waste?

a)

Sinks to the bottom and gets buried under the sand

b)

It never fully goes away, it just breaks into little pieces

c)

Dissolves and decomposes in the water

d)

It is dumped in the ocean for fish to eat

111.

Which of the following is an effect of an oil spill?

a)

Many plants and animals die.

b)

The fishing industry improves.

c)

Plant life increases.

d)

The oil cleans the beaches.

112.
A farmer is storing the manure from his farm in large piles next to the river. What type of pollution would this cause?
a)
Toxic
b)
Bacterial
113.
Instead of using his bike to go to places, a college student uses his car. What type of pollution would this cause?
a)
Nutrient
b)
Bacterial
c)
Toxic
114.
Farmers increases their use of pesticides, herbicides, and fertilizers. What type of pollution would this cause?
a)
Sediment
b)
Nutrient
c)
toxic
115.
Someone drains used car oil and anti-freeze onto the ground. What type of pollution would this cause?
a)
Toxic
b)
Bacterial
116.
The Harrison's decided to cut down the trees and the brushes that were obstructing their view. This left an open area with no vegetation between the house and the lake. What type of pollution would this cause?
a)
Sediment
b)
Nutrient
117.
Untreated sewage is released into the environment. What type of pollution would this cause?
a)
Bacterial
b)
toxic
118.
Many schools serve food on paper products rather than using reusable products. In many cases, these paper products are not made from recycled paper. What type of pollution would this cause?
a)
Sediment
b)
Toxic

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