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6. What is a group?

  • Random elements together
  • The columns in the periodic table
  • The rows in the periodic table

7. Why was Newlands idea not accepted?

  • Did not work after calcium
  • Didn't leave any gaps
  • Was not a respected scientist

8. Properties of group 7 elements

  • Low density, not very reactive, react covalently
  • React with metals to produce ionic compounds
  • High density, highly reactive, react ionically with non-metals

9. How are the elements arranged in the periodic table?

  • By atomic number
  • By atomic mass
  • By the number of electrons

10. 1 useful property of transition metals

  • Good catalyst
  • Poor conductor
  • Highly reactive
  • Easily obtained

11. Why are the more reactive elements higher up in group 7?

  • The electrons are closer to the nucleus, stronger forces, easier to gain an electron.
  • The electrons are further from the nucleus, meaning there is a weaker attraction so it is easy to lose an electron.

12. How where the elements arranged in the early periodic table?

  • By atomic mass
  • By atomic number
  • Randomly
  • By the number of electrons

13. Why are the alkali metals stored in oil?

  • They would ignite in air
  • They are highly reactive with water
  • They are highly reactive with oil

14. What was Mendelevs idea?

  • Rule of triads
  • Organised elements in a repeating pattern and left gaps.
  • Rule of octaves

15. Two differences of transition metals compared with alkali metals

  • High melting point, stronger and harder
  • Low melting point, softer and weaker
  • More reactive

16. Why are the more reactive elements further down the group in group 1?

  • The electrons are further from the nucleus, meaning there is a weaker attraction so it is easy to lose an electron.
  • The electrons are closer to the nucleus, meaning there is a stronger attraction meaning it is easier to lose an electron

17. Properties of group 1 elements

  • Low density, highly reactive, react covalently with non-metals
  • Low density, highly reactive, react ionically with non-metals
  • Low density, not very reactive, react ionically with non-metals
  • High density, highly reactive, react ionically with non-metals