1. Which of the following are nuclear particles?

(a) Neutrons

(b) Protons

(c) Nucleons

(d) Atoms

(e) All of the above

2. Einstein’s equivalence principle relates to

(a) Weight and time.

(b) Space and gravity.

(c) Mass and energy.

(d) All of the above.

(e) None of the above.

3. The amount of radioactive material remaining after a period of time is related to the

(a) Atomic mass.

(b) Pressure.

(c) Half-life.

(d) Volume.

(e) None of the above.

4. Describe the Bohr model of the atom.

5. If the strong force suddenly became much weaker in a nucleus while the electric force remained unchanged, what might happen to the nucleus?

6. Explain the principle of mass–energy equivalence in your own words.

7. What is the difference among the following atoms: 116C, 126C, and 136C what are the similarities?

8. Explain the term electron volt in your own words.