The Periodic Table Quiz
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5 questions, one answer each
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1. What property is the periodic table arranged in order of?
- A. Relative atomic mass
- B. Atomic (proton) number
- C. Number of neutrons
- D. Melting point
2. What is a column of the periodic table called?
- A. A period
- B. A shell
- C. A group
- D. A series
3. Why do elements in the same group react in similar ways?
- A. They have the same number of neutrons
- B. They have the same number of outer-shell electrons
- C. They have the same atomic number
- D. They are all metals
4. Whose earlier work forms the basis of the modern periodic table?
- A. Rutherford
- B. Bohr
- C. Mendeleev
- D. Dalton
5. Helium is a noble gas but has only 2 outer electrons, not 8. Why is it still unreactive?
- A. Helium's single electron shell is full with just 2 electrons
- B. Helium has no electrons at all
- C. Helium's nucleus is unusually stable
- D. Helium reacts easily but very slowly