Crossword

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Across
  1. 6. Right side of the periodic table dull
  2. 9. father of the periodic table
  3. 10. Neutral charged particle
  4. 11. A ratio
  5. 12. when a element gains electrons then form negative ions as a reaction.
  6. 13. Measure size of atoms
  7. 16. amount of energy released
  8. 17. negatively charged subatomic particle.
Down
  1. 1. Left side of the periodic table & good conductors
  2. 2. basic unit a source of energy.
  3. 3. variations of a element
  4. 4. light and radio waves
  5. 5. change into a ion
  6. 7. Positive charged particle
  7. 8. Published his ideas about the atoms in 1803
  8. 12. capacity for doing work.
  9. 14. groups one and two
  10. 15. bottom 2 rows