Which statement about ionizing radiation is true?

Which statement about ionizing radiation is true?

• A. Ionizing radiation does not change atoms.
• B. Ionizing radiation can cause changes to atoms by making them electrically charged.
• C. Ionizing radiation consists only of light waves.
• D. Ionizing radiation only affects bacteria.

Answer: (B)

Ionizing radiation has enough energy to remove electrons from atoms, turning neutral atoms into charged ions. That act of ejecting electrons is what makes the radiation “ionizing,” because it changes the electrical state of the atom and can create free electrons and positive ions. This is why the statement is true: ionizing radiation can cause changes to atoms by making them electrically charged. Some forms of ionizing radiation are high-energy photons (like X-rays and gamma rays), but it isn’t limited to light waves alone—particle radiation such as alpha and beta particles also ionizes atoms. So the idea that it consists only of light waves isn’t accurate. And ionizing radiation isn’t restricted to affecting bacteria; it can interact with many materials, including metals, plastics, and living tissue.

Ionizing radiation has enough energy to remove electrons from atoms, turning neutral atoms into charged ions. That act of ejecting electrons is what makes the radiation “ionizing,” because it changes the electrical state of the atom and can create free electrons and positive ions. This is why the statement is true: ionizing radiation can cause changes to atoms by making them electrically charged.

Some forms of ionizing radiation are high-energy photons (like X-rays and gamma rays), but it isn’t limited to light waves alone—particle radiation such as alpha and beta particles also ionizes atoms. So the idea that it consists only of light waves isn’t accurate. And ionizing radiation isn’t restricted to affecting bacteria; it can interact with many materials, including metals, plastics, and living tissue.