4 Questions
Which element was discovered to emit radiations affecting photographic plates and causing ionization?
Uranium
What term is also used to refer to radioactivity?
Radioactive decay
Which of the following elements are radioactive or unstable?
Uranium, thorium, radium, polonium, radon
Which two elements were discovered by Marie Curie?
Radium and polonium
Study Notes
Radioactivity
- Uranium was discovered to emit radiations affecting photographic plates and causing ionization.
- The term "radioactivity" is also used to refer to this phenomenon.
Radioactive Elements
- Radium and Polonium are radioactive elements discovered by Marie Curie.
- Uranium and Thorium are also radioactive or unstable elements.
Test your knowledge of radioactivity and radioactive elements with this quiz. Explore the history of radioactivity discovery, the properties of radioactive elements, and their impact on the world.
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