Question

A stable nucleus will decay, or emit, particles.

True
False
Question 13
Video #4, Question #2

Match the particle to its description.

Column A
1.
Relatively large particle:
Relatively large particle
2.
This particle cannot penetrate very far into other materials:
This particle cannot penetrate very far into other materials
3.
Can be absorbed by a sheet of paper:
Can be absorbed by a sheet of paper
4.
Can penetrate other materials moderately:
Can penetrate other materials moderately
5.
Can be absorbed by a sheet of aluminum:
Can be absorbed by a sheet of aluminum
6.
Has no mass and a negative charge:
Has no mass and a negative charge
7.
Has no mass and no charge:
Has no mass and no charge
8.
Can be absorbed by lead:
Can be absorbed by lead
9.
Can travel long distances:
Can travel long distances
Column B
a.Alpha particle
b.Beta particle
c.Gamma particle

Answer 1

**True**: A stable nucleus will not decay, while an unstable nucleus will.

**Matching the particles to their descriptions:**

Column A
1. Relatively large particle: **a. Alpha particle**
2. This particle cannot penetrate very far into other materials: **a. Alpha particle**
3. Can be absorbed by a sheet of paper: **a. Alpha particle**
4. Can penetrate other materials moderately: **b. Beta particle**
5. Can be absorbed by a sheet of aluminum: **b. Beta particle**
6. Has no mass and a negative charge: **b. Beta particle**
7. Has no mass and no charge: **c. Gamma particle**
8. Can be absorbed by lead: **c. Gamma particle**
9. Can travel long distances: **c. Gamma particle**

So the correct matches are as follows:
- 1: a
- 2: a
- 3: a
- 4: b
- 5: b
- 6: b
- 7: c
- 8: c
- 9: c