CHEMISTRY QUIZ- 10TH

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