Across
- 2. smallest part of an atom
- 8. odorless, colorless, low chemical reactivity
- 10. created the periodic table
- 11. of metals and Non-metals
- 12. center of an atom
- 13. energy cannot be created or destroyed
- 17. number of electrons
- 19. substance that cannot be broken down
- 22. energy given off
- 23. neutral charge
- 24. two or more elements combined
- 26. column on the P.T
Down
- 1. one ring in a shell
- 3. smallest particle in a chemical element
- 4. outermost electron in shell
- 5. row on the P.T
- 6. positively charged
- 7. mass of an atomic particle
- 9. negative charge
- 14. energy absorbed
- 15. abbreviation of element
- 16. does not conduct, brittle
- 18. what is reacted upon
- 20. hard, opaque, shiny, good conductivity
- 21. coating
- 25. the result of a reaction