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