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Unit 3: Nuclear Chemistry Review 1

Total questions: 60

Worksheet time: 1hrs 27mins

Name
Class
Date
1.

In Alpha decay what particle is emitted?

a)

Helium (He)

b)

Electron (e-)

c)

Energy (Photon)

2.

In Beta decay what particle is emitted?

a)

Helium (He)

b)

Electron (e-)

c)

Energy (Photon)

3.

In Gamma decay what particle is emitted?

a)

Helium (He)

b)

Electron (e-)

c)

Energy (Photon)

4.

Which form of radiation can be stopped by something as thin as a sheet of paper?

a)

Alpha

b)

Beta

c)

Gamma

5.

Identify the missing variable in the following reaction.

a)
b)
c)
6.

Identify the missing variable in the following reaction.

a)
b)
c)
7.

Identify the missing variable in the following reaction.

a)
b)
c)
8.

Gamma rays _________.

a)

have no mass and no charge

b)

have mass but no charge

c)

have no mass but have charge

d)

have mass and charge

9.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
10.

List the three types of nuclear radiation in increasing order of penetrating power.  

a)
  alpha, beta, gamma 
b)
X ray, beta, gamma
c)

gamma, beta, alpha

d)
X ray, gamma, beta 
11.

This radiation can only be stopped by a thick sheet of lead or several meters of water.

a)

alpha

b)

beta

c)

gamma

d)

alpha and beta

e)

none of the above

12.

This type of decay creates a new element

a)

alpha

b)

beta

c)

gamma

d)

alpha and beta

e)

none of the above

13.

This type of radiation can alter DNA and result in cancerous cells.

a)

alpha

b)

beta

c)

gamma

d)

all of the above

e)

none of the above

14.

This type of decay does not cuase a change in the atomic mass of the product

a)

alpha

b)

beta

c)

gamma

d)

beta and gamma

e)

none of the above

15.

What is an isotope?

a)

forms of the same element that contain equal numbers of electrons but different numbers of protons

b)

forms of the same element

c)

forms of the same element that contain equal numbers of protons but different numbers of neutrons

d)

An atom with no nucleus

16.

radioactivity is

a)

the energy that came from radius

b)

The energy that is released from the nucleus of the atom

c)

the energy that is released from the outer shell of the atom

17.

An isotope is a version of an element with the same number of protons but different number of __________.

a)

neutron

b)

electron

18.

In alpha decay, the atomic number...

a)

increases by 2

b)

decreases by 2

c)

increases by 4

d)

decreases by 4

19.

In alpha decay, the mass number...

a)

increases by 2

b)

decreases by 2

c)

increases by 4

d)

decreases by 4

20.

The mass number of Neptunium (Np) is _____.

a)

93

b)

237

c)

95

d)

941

21.

The atomic number of Neptunium (Np) is _____.

a)

93

b)

237

c)

95

d)

241

22.

The particle emitted in beta-minus decay is a ____________________.

a)

a proton

b)

an electron

c)

a neutron

23.

alpha particles have a __________ penetrating power.

a)

weak

b)

medium

c)

stong

24.

gamma rays have a __________ penetrating power.

a)

weak

b)

medium

c)

stong

25.

beta particles have a __________ penetrating power.

a)

weak

b)

medium

c)

stong

26.

alpha particles can be stopped with?

a)

aluminum

b)

piece of paper

c)

lead

27.

beta particles can be stopped with?

a)

aluminum

b)

piece of paper

c)

lead

28.

gamma rays can be stopped with?

a)

aluminum

b)

piece of paper

c)

lead

29.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
30.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
31.
Balance the following equation:
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
32.

Solve this equation for alpha decay.

88226Ra --> ___ + 24He

a)

86222Rn

b)

89226Ac

c)

84224Po

d)

88225Ra

33.

Solve this equation for beta decay.

614C --> ___ + -10e

a)

410Be

b)

714N

c)

210He

d)

613C

34.

In the symbol 167N what the 7 stand for?

a)

Mass number

b)

Atomic number

c)

Atomic mass

d)

Number of neutrons

35.
The following is an example of what type of reaction?
24395Am  →  23993Np + 42He 
a)
alpha decay
b)
beta decay
c)
gamma decay
36.

_______ is when a large nucleus is split into smaller nuclei releasing large amounts of energy.

a)

fusion

b)

fission

c)

radioactive decay

d)

gamma radiation

37.

This is an example of...

a)

Fission reaction

b)

Fusion reaction

c)

Combustion reaction

d)

Radioactive Decay

38.

_______ is when two small nuclei collide and join together to form a larger nucleus releasing large amounts of energy.

a)

fission

b)

beta decay

c)

alpha decay

d)

fusion

39.

Which nuclear process if shown in the picture?

a)

fission chain reaction

b)

fusion reaction

c)

combustion

d)

radioactive decay

40.

Organize these options into the right categories

Categorize the following

Atom is divided

Two atoms join

Nuclear waste is an issue

Uses uranium and other radioactive elements

1000 x stronger

Typically uses hydrogen and produces helium

Naturally occuring on the sun

Produces energy in stars

Used in nuclear power plants

Chain reaction can occur

Nuclear Fission (5)
Nuclear Fusion (5)
41.

What are the main differences between fission and fusion?

a)

Fission involves combining small nuclei to form a larger nucleus, while fusion involves splitting a large nucleus into smaller ones.

b)

Fission involves splitting a large nucleus into smaller ones, while fusion involves combining small nuclei to form a larger nucleus.

c)

Fission and fusion are the same processes that release energy in nuclear reactions.

d)

Fission occurs only in stars, while fusion occurs only in nuclear reactors.

42.

What do you find here?

a)

Nuclear fusion

b)

Nuclear fission

43.

What type of nuclear reaction is currently used in nuclear power-plants?

a)

Fusion

b)

Half-life

c)

Fission

d)

Fusion or fission

44.

Which subatomic particle seems to have a stabilizing effect on an isotope?

a)

protons

b)

neutrons

c)

electrons

d)

quarks

45.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
46.
Very high temperature and pressure is required for:
a)
Fission
b)
 Fusion
c)
Radioactive Decay
47.

Which process, fusion or fission, is considered a natural process?

a)

Fission

b)

Fusion

48.
The product of nuclear fission includes
a)
neutrons and electrons
b)
several nuclei and neutrons
c)
several nuclei and electrons
d)
several nuclei and protons
49.
What is a chain reaction?
a)
When electrons travel are emitted causing electricity
b)
When a nuclear fission reaction occurs, the protons emitted can strike other nuclei in the sample, and cause them to split
c)
When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
d)
When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split
50.
Do all stars make energy through fusion?
a)
Yes
b)
No
c)
Just our sun
d)
Only large stars
51.

The term given to unstable radioactive atoms.

a)

Parent

b)

Daughter

c)

Half Life

d)

Igneous

52.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

53.

A sample will lose half of the parent isotope after 1 half life.

a)

TRUE

b)

FALSE

54.

The diagram shows 32 atoms

32 of the Red are the parent isotope

0 of the atoms are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

55.

The diagram shows 32 atoms.

16 of the Red are parent isotopes

16 of the Green are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

56.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
57.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)

0.5g

c)
0.3g
d)
0.25g
58.

What is an isotope?

a)

Different forms of an element

b)

When an atom loses a proton

c)

A type of radioactivity

d)

The tool used to identify radioactivity

59.

An isotope of cesium (cesium-137) has a half-life of 30 years. If 1.0 mg of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain?

a)

0.5 mg

b)

0.25 mg

c)

0.125 mg

d)

0.0625 mg

60.

Which phrase describes a risk associated with producing energy in a nuclear power plant?

a)

depletion of atmospheric hydrogen (H₂)

b)

depletion of atmospheric carbon dioxide (CO₂)

c)

production of wastes needing long-term storage

d)

production of wastes that cool surrounding water supplies

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