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Nuclear Decay

Total questions: 46

Worksheet time: 45mins

Name
Class
Date
1.
Alpha particles.....
a)
a) are positively charged.
b)
b) consist of two protons and four neutrons.
c)
c) can penetrate any thickness of matter
d)
d) All of the above 
2.
Radioactive materials have unstable...
a)
electrons
b)
protons
c)
nuclei
d)
neutrons
3.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
4.
In the equation,  146C --> 147N + 0-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.
a)
Radioactive
b)
Beta
c)
Alpha
5.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
6.
What element is the ?
a)
Ag-115
b)
Cd-115
c)
Pd-115
d)
Not Listed
7.
Which type of nuclear radiation is being emitted here?
a)
alpha
b)
beta
c)
gamma
d)
none
8.
If Gadolinium-150 goes through alpha decay, the resulting element has a new atomic mass of _____.
a)
150
b)
148
c)
146
9.

In the symbol 20682Pb what does 206 stand for?

a)

Number of neutrons

b)

Atomic number

c)

Atomic mass

d)

Number of protons

10.
What is the symbol for an alpha particle?
a)
42He
b)
0-1e
c)
0+1 e
d)
10n
11.
What element is the ?
a)
Ag-115
b)
Cd-115
c)
Pd-115
d)
Not Listed
12.
Balance the following equation:
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
13.
Type of radiation that requires thick layers of concrete or lead in order to be stopped
a)
Gamma
b)
They are equal
c)
Beta
d)
Alpha
14.
a)
42He
b)
0-1 e
c)
00Y
d)
178O
15.
Solve this equation for alpha decay.
88226Ra = ___ + 24He
a)
86222Rn
b)
89226Ac
c)
84224Po
d)
88225Ra
16.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
17.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
18.
Solve this equation for beta decay.
2760Co = ___ + -10e
a)
2556Mn
b)
2860Ni
c)
2358V
d)
2759Co
19.

When a neutron decays by turning into a proton and an electron is emitted - what is the name of the emitted electron?

a)

an alpha particle

b)

a beta particle

c)

gamma radiation

d)

an alpha particle and gamma radiation

20.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
21.
Negatively charged particles emitted from a nucleus at a high speed are ____.  
a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
22.
The three types of nuclear radiation in increasing order of penetrating power are ____.  
a)
  alpha, beta, gamma 
b)
X ray, beta, gamma
c)
alpha, gamma, beta 
d)
X ray, gamma, beta 
23.
For which of the following problems would a scientist most likely use carbon-14? 
a)
to calculate the age of the Earth's oldest rocks
b)
to calculate the age of a piece of bone 
c)
to identify the elements that make up a rock 
d)
to identify the elements that make up a bone
24.

Describe the structure of an alpha particle.

a)

a fast-moving electron

b)

2 protons and 2 neutrons

c)

a slow-moving neutron

d)

a hydrogen nucleus

25.

In alpha decay, the atomic number...

a)

increases by 2

b)

decreases by 2

c)

increases by 4

d)

decreases by 4

26.

The mass number of Neptunium (Np) is (a)   .

27.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
28.
What type of decay?
a)
alpha
b)
beta
c)
gamma
29.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
30.

What element went through Alpha Decay in the above Equation?

a)

Uranium 234

b)

Uranium 226

c)

Uranium 88

31.

Which type of decay is represented in this equation?

a)

Alpha

b)

Beta

c)

Gamma

32.

What is the missing mass number of Thorium?

a)

239

b)

231

c)

92

d)

92

33.

How many protons are in Uranium?

a)

235

b)

92

c)

90

d)

2

34.

How many neutrons are in Uranium 235?

a)

235

b)

92

c)

143

d)

144

35.

Which type of nuclear decay is pictured above?

a)

Alpha

b)

Beta

c)

Gamma

36.

How many protons does Copper have?

a)

64

b)

29

c)

28

d)

35

37.

What type of nuclear equation is represented in the above equation?

a)

Alpha

b)

Beta

c)

Gamma

38.

What is the atomic mass of Thorium in the above equation?

a)

233

b)

92

c)

90

d)

229

39.

How many neutrons are in Uranium 233?

a)

233

b)

92

c)

90

d)

141

40.

The above equation is an example of which type of nuclear decay?

a)

Alpha

b)

Beta

c)

Gamma

41.

In the equation, which of the following is true? (Pick 2)

a)

A neutron is converted into a proton

b)

A proton is converted into a neutron

c)

The atomic mass remains constant

d)

The atomic mass increase by 1

e)

The atomic mass decreases by 1

42.

Which type of nuclear decay is represented in the above equation?

a)

alpha

b)

beta

c)

gamma

43.

What is the missing element on the right side of the equation?

a)

Polonium

b)

Lead

c)

Radium

44.

How many protons are in gold?

a)

185

b)

79

c)

106

45.

If gold goes through Alpha decay, what is the mass of the new element?

a)

185

b)

79

c)

181

d)

80

46.

If gold goes through Alpha decay, what is the atomic number of the new element?

a)

185

b)

181

c)

77

d)

79

e)

80

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