Question

section 4.4 changes to the nucleus—nuclear reactions
in your textbook, read about radioactivity.
for each item in column a, write the letter of the matching item in column b.
column a

1. the rays and particles that are emitted by a radioactive material
2. a reaction that involves a change in an atoms nucleus
3. the process in which an unstable nucleus loses energy spontaneously
4. fast - moving electrons

column b
a. nuclear reaction
b. beta radiation
c. radiation
d. radioactive decay

Explanation:

1. Radiation is the rays and particles emitted by radioactive material.
2. A nuclear reaction involves a change in an atom's nucleus.
3. Radioactive decay is the process where an unstable nucleus loses energy spontaneously.
4. Beta - radiation consists of fast - moving electrons.

Answer:

1. c
2. a
3. d
4. b