Radioactivity Quiz

What is radioactivity?

• The process in which stable atomic nuclei transform and emit radiation.

• The process in which unstable atomic nuclei transform and emit radiation.

• The process in which atoms combine to form molecules.

• The process in which molecules break down into atoms.

Which of the following processes is NOT related to radioactivity?

• Radioactive decay

• Transformation of unstable atomic nuclei

• Emission of radiation

• Chemical bonding

What is a common property of all isotopes with an atomic number greater than 83?

• They are stable

• They are radioactive

• They are non-reactive

• They are inert

What material is required to stop a beta particle?

• Paper

• Plastic

• Aluminum foil

• Wood

When are gamma rays emitted?

• When a nucleus in a ground state moves to a higher energy state

• When a nucleus in an excited state moves to a lower energy state

• When an electron moves to a higher energy level

• When an atom loses an electron

Which type of light has less energy per photon compared to gamma rays?

• Infrared light

• Visible light

• Ultraviolet light

• All of the above

What is the average annual radiation dose from radon gas?

• 21 mrem

• 29 mrem

• 228 mrem

• 2000 mrem

How many mSv are equivalent to 1 rem?

• 0.01 mSv

• 0.1 mSv

• 1 mSv

• 10 mSv

What happens to the mass number of a nucleus during alpha emission?

• It increases by 4.

• It decreases by 4.

• It increases by 2.

• It decreases by 2.

What is the symbol for an alpha particle?

• 1/1 H

• 0/-1 e

• 4/2 He

• 1/0 n