Understanding Radiation and Radioisotopes

The video tutorial introduces the concept of radiation, explaining that it originates from the nucleus of an atom, which consists of neutrons and protons. Normally stable, a nucleus can become unstable and emit radiation, making the atom radioactive. Such atoms are known as radioisotopes, while most atoms remain stable and non-radioactive.

What feeling does the concept of radiation often evoke in people?

• Indifference

• Uneasiness

• Curiosity

• Excitement

Where does radiation originate from within an atom?

• The electrons

• The nucleus

• The outer shell

• The atomic cloud

What is the nucleus of an atom composed of?

• Electrons and protons

• Neutrons and electrons

• Neutrons and protons

• Protons and electrons

What term is used to describe an atom that emits radiation?

• Stable

• Inert

• Neutral

• Radioactive

What are atoms that emit radiation called?

• Isotopes

• Molecules

• Radioisotopes

• Ions