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Chem Final Semester 1, 2025

Total questions: 109

Worksheet time: 5hrs 53mins

Name
Class
Date
1.

When reading the volume in a graduated cylinder, look at the ___ of the meniscus.

a)

top

b)

bottom

c)

It doesn't matter.

d)

What is a meniscus?

2.

What is the volume?

a)

23 mL

b)

28 mL

c)

36 mL

d)

38 mL

3.

Convert 323 m to km.

a)

0.323 km

b)

3.23 km

c)

323,000 km

d)

3,230 km

4.

Convert 0.75 L to mL.

a)

750 mL

b)

75 mL

c)

75,000 mL

d)

0.0075 mL

5.

Convert 2.2 kg to mg.

a)

2,200,000 mg

b)

0.0000022 mg

c)

2,200 mg

d)

0.0022 mg

6.

Convert: 253 °C to K:

a)

526 K

b)

625 K

c)

0 K

d)

186 K

7.

Convert a 136 oF to oC

a)

57.777 oC

b)

330 K

c)

57.5 oC

d)

220 C

8.

Convert 25.0 oC to oF:

a)

77 oF

b)

77 oC

c)

100 oF

d)

100 oC

9.

Convert 44°F to Kelvin

a)

0 K

b)

310 K

c)

220 K

d)

280 K

10.

On a graph, which axis shows the independent variable?

a)

x-axis

b)

y-axis

c)

neither

d)

it changes

11.

Which of the following is the label for the independent variable.

a)

Money Collected

b)

Raising Money

c)

Boxes Sold

d)

None of the above

12.
On a graph, which axis shows the dependent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
13.

What is the DEPENDENT variable in this experiment?

"Do tall people jump further than short people?"

a)

height of the person

b)

weight of the person

c)

how fast the person runs

d)

how far the person jumps

14.

What is the INDEPENDENT variable in this experiment?

"Which type of metal, copper or aluminum, conducts heat faster?"

a)

size of metal

b)

types of metal

c)

time it takes to heat up

d)

shape of the metal

15.
Which variable is NOT a constant in this experiment?
"Is Bounty paper towel more absorbent than sparkle paper towel?
a)
the size of paper towel
b)
the amount of water for the paper towel to absorb
c)
amount of water the paper towel absorbed
d)
the shape of paper towel
16.

(1.2 X 105) + (5.35 X 106)

a)

6.55 X 105

b)

6.55 X 106

c)

5.47 X 105

d)

5.47 X 106

17.

(3.67 X 102) - (1.6 X 101)

a)

2.07 X 101

b)

2.07 X 102

c)

3.51 X 101

d)

3.51 X 102

18.

Multiply:
(9.4 x 106)(3.2 x 105)

a)

30.08 x 1011

b)

3.8 x 101

c)

3.008 x 1012

d)

2.9375 x 101

19.
Divide:
(6.9 x 107) / (2.3 x 10-3)
a)
3 x 1010
b)
3 x 104
c)
3 x 10-4
d)
3 x 10-11
20.

Energy of position or stored energy is called

a)

Potential Energy

b)

Kinetic Energy

c)

Mechanical Energy

d)

Chemical Energy

21.

The energy of motion is called

a)

Potential Energy

b)

Kinetic Energy

c)

Mechanical Energy

d)

Chemical Energy

22.

At which point is potential energy greatest?

a)

A

b)

B

c)

C

d)

D

e)

E

23.

At which point is kinetic energy greatest?

a)

A

b)

B

c)

C

d)

D

e)

E

24.

When a pendulum swings, at what point is the kinetic energy greatest?

a)

1

b)

2

c)

3

d)

4

25.

When a pendulum swings, at which point is potential energy greatest?

a)

1

b)

2

c)

3

d)

4

26.

Heat transfer occurs

a)

in many directions

b)

both from warm objects to colder ones and from cold objects to warmer ones

c)

only from warm objects to colder ones

d)

only from cold objects to warmer ones

27.

Which particles are moving fastest?

a)

Particles in ice.

b)

Particles in boiling water.

c)

Particles in water from the sink.

d)

Particles in steam.

28.
Which example below is an example of conduction?
a)
Boiling macaroni
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
29.
Which example below is an example of convection?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
30.
Which example below is an example of radiation?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
31.

When the temperatures of materials that are in contact are the same, the materials are said to be in

a)

thermal balance

b)

equality

c)

a powerful situation

d)

thermal equilibrium

32.

_____________________ occurs only in gases and liquids. This is one way heat transfers from one place to another.

a)

Conduction

b)

Convection

c)

Radiation

d)

Containment

33.

What does the Law of Conservation of Energy state?

a)

energy is always created, but not destroyed

b)

energy cannot be created or destroyed

c)

energy cannot be created, but can be destroyed

d)

energy is always being created and destroyed

34.

An uncovered pot of soup is simmering on Mr. B's stove, and there are water droplets on the wall behind it. What sequence can you infer has occurred?

a)

vaporization, then condensation

b)

freezing, then thawing

c)

condensation, then vaporization

d)

Mr. B is making a mess

35.
The change from liquid to solid, or the reverse of melting, is called:
a)
freezing
b)
condensation
c)
boiling
d)
sublimation
36.
What is vaporization?
a)
a liquid becoming a gas
b)
a gas becoming a liquid
c)
a liquid becoming a solid
d)
a gas becoming a solid
37.
A shrinking puddle is an example of ___________, or vaporization that takes place only on the surface of a liquid.
a)
evaporation
b)
boiling
c)
freezing
d)
melting
38.
Molecules have energy and _________ stop moving
a)
rarely
b)
always
c)
never
d)
sometimes
39.

Describe the substance between letters A and B.

a)

Solid

b)

Liquid

c)

Melting

d)

Evaporating

40.
What phase change occurs at D-E?
a)
melting
b)
condensing
c)
boiling
d)
freezing
41.
During a phase change, the temperature
a)
increases
b)
decreases
c)
fluctuates
d)
stays the same
42.
Segment C?
a)
gas
b)
liquid
c)
boiling
d)
melting
43.

Between which points is the substance changing state?

a)

A-B only.

b)

A-B, C-D, E-F

c)

B-C only.

d)

B-C, D-E

44.
The diagram represents solar energy that is absorbed by Earth's land and water surfaces and is changed into heat that radiates back into the atmosphere.What is this process called?
a)
ozone
b)
radiation
c)
greenhouse effect
d)
evaporation
45.

The greenhouse effect is caused by

a)

more heat arriving at the Earth from the sun

b)

the Earth releasing more heat at night

c)

gases in the air trapping heat released by the Earth

46.

The graph shows us that

a)

the earth temperature is always increasing

b)

the earth's temperature has steadily increased since 1900

c)

the earth's temperature has steadily rising since the 1960s

d)

the earth's temperature decreased during the 19th and 20th centuries

47.

Which of the gases is NOT a greenhouse gas?

a)

water vapour

b)

carbon monoxide

c)

carbon dioxide

d)

methane

48.
Without the Greenhouse Effect the Earth would be
a)
warm 
b)
cold
c)
dead
49.
Which is a natural source of greenhouse gases?
a)
aerosols
b)
deforestation
c)
volcanic eruptions
d)
burning fossil fuels
50.
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?
a)
lower levels of ozone in the atmosphere
b)
lower levels of nitrogen in the atmosphere
c)
higher levels of carbon dioxide in the atmosphere
d)
higher levels of oxygen in the atmosphere
51.

The main human activity that adds to an individual's carbon footprint.

a)

usage of alternative energies (wind, solar, etc)

b)

respiration and growth

c)

photosynthesis by plants

d)

usage of fossil fuels for energy

52.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
53.

A higher albedo results in a surface...

a)

Reflecting more visible light

b)

Absorbing more visible light

c)

Reflecting more infrared light

d)

Absorbing more infrared light

54.

Which greenhouse gas is NOT influenced by human activity?

a)

carbon dioxide

b)

nitrous oxide

c)

water vapor

d)

methane

55.

Floating sea ice melts...

a)

and causes sea levels to rise because it adds water to the ocean.

b)

but does not cause sea levels to rise because the ice displaces the same amount of ocean water as the melted ice would displace.

56.

Melting land ice...

a)

causes sea levels to rise because it adds water to the ocean.

b)

does not cause sea levels to rise because the water fills the space left by the melted sea ice.

57.

Which statement about the albedo of ocean water and sea ice in the summer is correct?

a)

The low albedo of ocean water means the heated water will sink and form ocean currents.

b)

The albedo of sea ice is lower than the albedo of ocean water, leading to the melting of sea ice.

c)

Sea ice absorbs less radiation, making it warmer than ocean water.

d)

Ocean water absorbs more radiation and is warmer than sea ice.

58.

An important example of a "positive feedback loop" in the polar climate system is:

a)

Scientists in remote places check on each others instruments

b)

Warming ocean water opens new areas for marine species

c)

Warmer winters cause more plant growth, providing more food

d)

Sea ice melt opens more ocean to sunlight, causing more melt

59.

Once sea ice begins to melt, a cycle often begins. As more ice melts and exposes more dark water, the water absorbs more sunlight. The sun-warmed water then melts more ice. Over several years, this can influence global climate. This process is an example of:

a)

a positive feedback cycle.

b)

a negative feedback cycle.

c)

a maelstrom.

d)

false reasoning.

60.
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?
a)
lower levels of ozone in the atmosphere
b)
lower levels of nitrogen in the atmosphere
c)
higher levels of carbon dioxide in the atmosphere
d)
higher levels of oxygen in the atmosphere
61.

The main human activity that releases greenhouse gases is

a)

plastic production

b)

burning fossil fuels

c)

coal mining

d)

eating meat

62.

What has the highest albedo?

a)

the oceans

b)

Ice in the Arctic or Antarctic

c)

the ground

d)

roads

63.

What is the scientific definition of the albedo effect?

a)

How much sunlight an object reflects

b)

How much sunlight an object absorbs

c)

How hot an object gets

d)

How cold an object gets

64.
The atomic number of an element is the total number of which particles in the nucleus?
a)
neutrons
b)
protons
c)
electrons
d)
protons and electrons
65.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
66.

What is the mass number of an atom?

a)

the number of protons

b)

the number of protons and neutrons

c)

the number of neutrons

d)

the number of protons and electrons

67.
What is the mass number of an element with 40 protons, 40 electrons, and 46 neutrons?
a)
80
b)
6
c)
86
d)
126
68.
In the modern periodic table,  elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
69.
What subatomic particle is electrically neutral (no charge)?
a)
Proton
b)
Ion
c)
Neutron
d)
Electron
70.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
71.
A neutral atom contains 30 electrons and 35 neutrons. What is the identity of this element?
a)
B
b)
Br
c)
Tb
d)
Zn
72.
What are valence electrons?
a)
electrons on the first orbital 
b)
elecrons in the nucleus
c)
protons in the outermost energy level
d)
the number of electrons on the outer energy level
73.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
74.

What is the element name of the atom pictured?

a)

Nitrogen

b)

Neon

c)

Krypton

d)

Chlorine

75.

An isotope of Boron has a mass number of 12. How many neutrons does it have?

a)
6
b)
7
c)
11
d)
12
76.
An atom of lithium will always lose one electron to form a/an
a)
anion.
b)
cation.
c)
protion
d)
uberion.
77.

Ions are atoms that have gained or lost electrons and have:

a)

a positive or negative charge

b)

no charge

c)

ONLY a positive charge

d)

ONLY a negative charge

78.
How many protons does this isotope of copper have?
a)
63
b)
29
c)
34
d)
92
79.
How many neutrons does this isotope of copper have?
a)
63
b)
29
c)
34
d)
70
80.

Boron has 3 valence electrons. What group is it part of?

a)

3

b)

13

c)

2

d)

12

81.

The charge of a proton is

a)

-2

b)

0

c)

+1

d)

-1

82.

The charge of a neutron is

a)

-3

b)

0

c)

-1

d)

+1

83.

The charge of an electron is

a)

-1

b)

+1

c)

+2

d)

0

84.

How many valence electrons are in the atom pictured?

a)

4

b)

2

c)

8

d)

0

85.

What element is represented by this Bohr model of an atom?

a)

Sulfur

b)

Uranium

c)

Argon

d)

Fluorine

86.

Use your periodic table. What element is in group 10, period 4?

a)

copper

b)

nickel

c)

cobalt

d)

palladium

87.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
88.

Isotopes are atoms of the same element that have different numbers of ________________.

a)

protons

b)

electrons

c)

neutrons

d)

nuclei

89.

Isotopes of the same element must have the same number of ___________________.

a)

protons

b)

electrons

c)

neutrons

d)

valence electrons

90.

What is the name for the isotope that has 39 protons and 50 neutrons.

a)

Yttrium-11

b)

Tin-39

c)

Tin-89

d)

Yttrium-89

91.

What element is in Period 2 Group 4A?

a)

Calcium

b)

Carbon

c)

Titanium

d)

Doesn't Exist

92.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

93.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
94.

When an atom loses a valence electron, it becomes a _________.

a)

cation

b)

anion

c)

neutral atom

d)

polyatomic ion

95.

When an atom gains a valence electron, it becomes a ___________.

a)

cation

b)

anion

c)

neutral ion

d)

polyatomic ion

96.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
97.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
98.

Why do elements form bonds?

a)

to get a charge

b)

so they can make friends

c)

to become stable by getting a full valence shell

d)

to become stable by increasing their mass

99.

What is the ion formed from Sulfur? If it has 6 valence electrons.

a)

S+2

b)

S-2

c)

S+6

d)

S-6

100.

How many electrons would a Calcium ion gain/lose? If it has 2 valence electrons.

a)

lose 1

b)

gain 1

c)

lose 2

d)

gain 2

101.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

102.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

103.
How many electrons should Lithium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
104.

Oxygen has 6 valence electrons but wants a full shell. What charge does oxygen tend to form?

a)

6+

b)

2-

c)

6-

d)

2+

105.

What element does this Lewis Dot Digram represent?

a)

Li

b)

Al

c)

C

d)

Be

106.

Which Lewis Dot Diagram would represent Chlorine?

a)
b)
c)
d)
107.

This could be the dot diagram of

a)

Si

b)

Br

c)

B

d)

S

108.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
109.

Which of the following shows a correct Lewis dot structure?

a)
b)
c)
d)

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