Match the word to its definition/description.

Question

Column A
1.
Radioactivity:
Radioactivity
2.
Radioisotope:
Radioisotope
3.
Isotope:
Isotope
4.
Radiation:
Radiation
Column B
a.an atom with an unstable nucleus
b.Rays and particles emitted by radioactive materials
c.when a substance spontaneously emits radiation
d.atoms of the same element with differing numbers of neutrons

Answer 1

1. Radioactivity: c. when a substance spontaneously emits radiation
2. Radioisotope: a. an atom with an unstable nucleus
3. Isotope: d. atoms of the same element with differing numbers of neutrons
4. Radiation: b. Rays and particles emitted by radioactive materials