Nuclear Symbols and Conservation Worksheet

Question 1

Which values describe an alpha particle?

1. A = 0, Z = −1
2. A = 1, Z = 0
3. A = 4, Z = 2
4. A = 4, Z = 4

Question 2

Carbon-14 has Z = 6. It emits a beta-minus particle with A = 0 and Z = −1. Determine the daughter’s mass and atomic numbers. Show the balances.

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Question 3

An excited nucleus emits only a gamma photon. How do its A and Z change?

1. Both decrease.
2. A decreases by 4 and Z decreases by 2.
3. A stays the same and Z increases by 1.
4. Both stay the same.

Question 4

A parent and daughter nucleus have the same mass number but different atomic numbers. Explain whether they represent the same element.

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Question 5

Which particle is emitted in record R?

1. An alpha particle
2. A beta-minus particle
3. A neutron
4. A positron

Question 6

Use the periodic table to identify the daughter element in record S.

1. Silicon
2. Phosphorus
3. Sulfur
4. Chlorine

Question 7

Find A and Z for the particle emitted in record S. Show both number balances.

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Question 8

How many fewer neutrons does the daughter in record R contain than its parent? Use the record to show your work.

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