Nuclear Physics Worksheet #3

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Physics 11. Nuclear ... This worksheet is an assignment to be completed on separate paper. ... answers to 2 or 3 significant figures and include appropriate units. 1. ... 9. Why do CANDU reactors use heavy water instead of normal water? 10.
Nuclear Physics Worksheet #3

Physics 11

This worksheet is an assignment to be completed on separate paper. Please be sure to round numerical answers to 2 or 3 significant figures and include appropriate units.

1.

In your own words, give brief definitions for, a) Isotopes

b)

Nucleons

c)

Binding Energy

d)

Transmutation

e)

Half-Life

f)

Fission

g)

Fusion

2. All isotopes have the same # of protons and # of electrons, but a different # of neutrons 2.

In a nuclear reactor, what are the functions of? a)

Moderators

b)

Control Rods

3.

List 2 advantages and 2 disadvantages of nuclear power.

4.

Explain the ways radioactive isotopes with short half-lives can be both more and less dangerous that isotopes with long half-lives.

5.

Determine the missing numbers or symbols 136 40 Xe b) c) a) 19 ?

6.

Determine the binding energy of

65 29

Cu in joules.

1 0

?

d)

0 −1

?

7.

Determine the half life of a radioactive material that drops from a mass of 1200 grams to only 400 grams in 42 hours.

8.

60 For both of these elements, 226 88 Ra , 27 Co , with the help of your data table, a) Determine their number of protons, electrons, and neutrons

b)

Determine what type of radioactive decay they follow

c)

Write a balanced decay equation (do not worry about any γ rays)

d)

Determine the “mass defect”

e)

Determine the energy given off from each reaction

f)

What is the elements half-life?

9.

Why do CANDU reactors use heavy water instead of normal water?

Heavy water acts as a moderator (slows neutrons which speeds up reaction) and also as a coolant in the reactor core.

10.

.

Balance the following reactions and indicate if they are: Alpha Decay, Beta Decay, Fission, or Fusion

a)

214 84

b)

4 2

He +

c)

1 0

n +

d)

131 53

210 82

Po →

I →

Pb + → 47Be

235 92

U→

0 −1

143 56

Ba +

+

+ 3 01n