AnswersCrowley Original Credit Chemistry BTypes of Radioactive Decay

Types of Radioactive Decay — Unit test Answers

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The table shows information about four students who are running around a track. Which statement is supported by the information in the chart?

Question illustration
A
Autumn has more kinetic energy than Chiang.
B
Mohammed has less kinetic energy than Autumn.
C
Lexy has more kinetic energy than Mohammed.
D
Chiang has less kinetic energy than Lexy.
2
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Which statement is true about the use of radiation to treat cancer?

A
Only weak X-rays can be used.
B
Only powerful X-rays can be used.
C
Only beta particles can be used.
D
Only alpha particles can be used.
3

An isotope undergoes radioactive decay by emitting radiation that has no mass. What other characteristic does the radiation have?

A
some shielding required
B
positive or negative charge
C
low penetrating power
D
no charge
4

Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate electricity.Which best completes the chart?

Question illustration
A
nuclear energy transformed to electrical energy
B
chemical energy transformed to electrical energy
C
radiant energy transformed to mechanical energy
D
kinetic energy transformed to mechanical energy
5

As a person pushes a box across a floor, the energy from the person’s moving arm is transferred to the box, and the box and the floor become warm. During this process, what happens to energy?

A
It is increased.
B
It is conserved.
C
It is decreased.
D
It is created.
6

What is the unit of measure for energy?

A
watt
B
newtons
C
joules
D
meters per second
7

What part of an atom is involved in a chemical reaction?

A
proton
B
neutron
C
nucleus
D
electron
8

A fusion reaction takes place between carbon and another element. Neutrons are released, and a different element is formed. The different element is

A
lighter than helium.
B
heavier than helium.
C
used for energy on Earth.
D
radioactive.
9

Which type of radiation is the main hazard during radiological procedures?

A
alpha
B
beta
C
gamma
D
positron
10

Which two types of potential energies would be types of mechanical energies?

A
electrical and kinetic
B
nuclear and chemical
C
radiant and thermal
D
elastic and gravitational
11

Consider the incomplete equation below If this equation was completed, which statement would it best support?

Question illustration
A
Nuclear fusion produces elements that are heavier than helium.
B
Nuclear fusion produces elements that are lighter than helium.
C
Nuclear fission produces elements that are heavier than helium.
D
Nuclear fission produces elements that are lighter than helium.
12

Which set of terms best defines what affects kinetic energy and potential energy, respectively?

A
position, gravity
B
gravity, velocity
C
velocity, height
D
height, position
13

Which best describes a chain reaction associated with a nuclear reaction?

A
Neutrons released during a fusion reaction cause other nuclei to fuse.
B
Neutrons released during a fission reaction cause other nuclei to split.
C
Helium nuclei released during a fission reaction cause other nuclei to split.
D
Helium nuclei released during a fusion reaction cause other nuclei to fuse.
14

A mining company wants to build a modern processing plant that is safe for workers. The location of the plant is close to the mining operation, which has inadvertently exposed some sources of radionuclides. Which is the best reason for consulting with a nuclear chemist before building the processing plant?

A
to determine the level of radionuclides present
B
to explain the health concerns that are related to radiation
C
to destroy all the radionuclides in the area immediately
D
to conduct tests to see if workers are affected by radiation
15

Which type of reaction does this diagram represent?

Question illustration
A
nuclear fission because an atom is splitting into two fragments
B
nuclear fusion because the products that are produced are radioactive
C
nuclear fission because a large amount of energy is being released
D
nuclear fusion because atomic nuclei combine to form a heavier nucleus
16

What is the source of almost all energy on Earth?

A
Earth’s hot core
B
the Sun
C
stored carbon
D
moving water
17

Which profession is likely to use a radiation shield?

A
dentist
B
astronomer
C
mathematician
D
geologist
18

A target is shielded from a radioactive sample by a sheet of metal. What kind of radiation can pass through the sheet of metal and hit the target?

A
gamma rays only
B
gamma rays and beta particles
C
beta particles only
D
beta particles and alpha particles
19

When a person strikes and lights a match, potential energy in the match is transformed into which types of energy?

A
electrical and thermal
B
thermal and radiant
C
radiant and nuclear
D
nuclear and kinetic
20

Seema knows the mass of a basketball. What other information is needed to find the ball’s potential energy?

A
the volume and height the ball reaches
B
the volume and shape of the ball
C
acceleration due to gravity and the height the ball reaches
D
acceleration due to gravity and the shape of the ball

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Types of Radioactive Decay