CHEMISTRY QUIZ- 10TH

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Across
  1. 1. They react with water to form alkaline solutions.
  2. 4. Most unreactive group
  3. 7. One of the basic 6 elements
  4. 8. Symbol of one element found in the spectra of stars
  5. 9. When a star dies.
  6. 11. It is formed when you mix metals.
  7. 13. Energy requiered to remove an electron
  8. 16. Early chemists tried to perfom this nuclear reaction.
  9. 18. It is in a class by itself
  10. 19. Another name for group 17
Down
  1. 2. Atomic radius _______ as you move down a group.
  2. 3. It decreases as you move down a group.
  3. 5. Original explosion of the universe according to theories.
  4. 6. Particle accelerator for superheavy elements.
  5. 10. One synthetic element named after a prize.
  6. 12. Most elements are __________
  7. 14. All are radioactive
  8. 15. Here we can find nuclear reactions today.
  9. 16. These are revealed by the arrangement of the periodic table
  10. 17. Elements created by men.