55. Select a statement describing mass defect.
a. The portion of the mass of particles of the nucleus given up to binding
b. The mass of the nucleus of an-atom after a period of radioactive decay.
56. List the three types of changes that take place in matter.
You have completed the text of this subcourse. Review the objectives on
pages i and ii, and make sure you understand them. When you are ready,
complete the examination, which begins on Page E-1.