elements

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Author:
camandstu
ID:
219934
Filename:
elements
Updated:
2013-05-21 12:45:50
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elements
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Questions on elements
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  1. What number in the periodic table is hydrogen?
    1
  2. Which percentage of the universe is made of hydrogen?
    75%
  3. What colour is hydrogen?
    colourless
  4. What is hydrogen important for?
    life
  5. If we didn't have hydrogen, what wouldn't exist on earth?
    water
  6. Who discovered hydrogen?
    Paracelsus
  7. Who first discovered that hydrogen was an element?
    Henry Cavendish
  8. What does "hydrogen" mean?
    water-maker
  9. What does "hydro" mean?
    water
  10. Is hydrogen heavy or light?
    light
  11. How did Henry Cavendish find hydrogen?
    He put metal bars into acid and the gas came off.
  12. Is hydrogen common on earth?
    nope
  13. What are the prime components of air?
    Nitrogen and Oxygen
  14. What can hydrogen be used for?
    party balloons, hot air balloons etc.
  15. What were hydrogen airships called in Britain?
    dirigibles
  16. What were hydrogen airships called in Germany?
    zeppelins
  17. Why don't we have hydrogen airships nowadays?
    They're highly flammable.
  18. Who uses hydrogen to fuel rockets?
    NASA

    (National Aeronautics and Space Administration)
  19. In the future what might hydrogen replace in cars?
    petrol
  20. What is number 1 in the periodic table?
    hydrogen
  21. Why might it be dangerous to put hydrogen in cars?
    Because it's flammable.
  22. Where is xenon found?
    Xenon is found from liquid air.
  23. Who discovered Xenon?
    Sir William Ramsey and M.W travers
  24. What does Xenon mean
    It comes fro "xenos" meaning stranger.
  25. When was xenon discovered?
    July 12th 1898
  26. Is xenon heavy or light?
    heavy
  27. What is the atomic number of xenon?
    54

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