Radioactivity

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1. What is an isotope?

  • an an atom of a different element that contain different numbers of neutrons
  • an atom of a different element that contain the same number of neutrons
  • an atom of the same element that contain different numbers of neutrons
  • an atom of the same element that contain different numbers of electrons/protons
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Other questions in this quiz

2. Protons & electrons have electric charges that are...

  • Unequal and opposite
  • Equal, but opposite
  • Equal, but same
  • Unequal and same

3. An alpha particle is the same as a...

  • Argon nucleus
  • Nitrogen nucleus
  • Helium nucleus
  • Flourine nucleus

4. Radioactive decay is due to...

  • Different numbers of electrons and protons
  • Unstable nuclei
  • Negative charge in nucleus
  • Stable nuclei

5. What can stop an alpha particle? (penetration)

  • 4-10 cm of air / 4 sheets of paper
  • 10-16 cm of air / 1 sheet of paper
  • 4-10 cm of air / 1 sheet of paper
  • 10-16 cm of air / 2 sheets of paper

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