1.What Is the Strong Nuclear Force?

Section 10.4 reading questions:

1.What is the strong nuclear force?

2.When is the strong nuclear force stronger than the electric forces within the nucleus of atoms?

3.As the nucleus of atoms increase describe the effect on electric forces within the nucleus and the strong nuclear force within the nucleus of atoms ?( couple sentences)

4.Explain why nuclei with more than 83 protons are all radioactive?

5.What is nuclear fission?

6.Copy figure 18 top of page 310.

7.Describe what is released in nuclear fission?

8.When uranium-235 undergoes fission does conservation of mass occur?

9.What happens to .1 % of U-235 during fission? Explain.

10.Write Einstein's mass – energy equation?

11.Describe what each symbol represents in the mass - energy equation?

12.Describe what Einstein's equation means in terms of energy and mass?

13.What did the first atomic bomb contain, how much of it, and what was the equivalent of the explosion?

14.Describe how a nuclear chain reaction works?

15.What is a uncontrolled chain reaction and when is it used?

16.Describe what a controlled chain reaction is and when is it used?

17.What is critical mass?

18.How much of today's electricity is produced by nuclear power in the U.S.?

19.What is a benefit of nuclear power?

20.What are disadvantages of nuclear power?

21.Trace and label the nuclear power station on p. 314.

22.What is fusion?

23.Where does fusion occur in nature?

24.How much hydrogen undergoes fusion on our Sun each second and how much is converted into energy?

25.What does fusion require?

26.What temperatures are reached within the Sun?

27.What is plasma and what two types of particles make it up?

28.What two isotopes do scientists think will fuel fusion in the future?

29.What are the two main problems in designing a fusion reactor?

30.How does the strong nuclear force affect the atom's electrons?

31.Why do fission chain reactions of U-235 not occur in underground uranium deposits?