Across
- 4. two metals as a compound
- 5. group 18, period 3
- 9. ___ number
- 12. a metal and a non-metal compound
- 14. multiple of the same atom joined
- 15. positively charged ions
- 16. rows of the periodic table
- 20. outermost shell
- 22. holds the neutrons and protons
- 25. 118 elements
- 27. two non-metals in a compound
- 29. has 2 valence electrons
Down
- 1. metal and non-metal characteristics
- 2. The creator of the first periodic table
- 3. negative charged particle
- 6. the more left and down in metals, the more
- 7. positive charged particle
- 8. a bond between a negatively charged and positively charged ion
- 10. negatively charged ions
- 11. two or more atoms combined
- 13. most of the mass of an atom
- 17. O
- 18. 2,8,18,36
- 19. neutral charged particle
- 21. columns of the periodic table
- 23. the 17 group of the periodic table
- 24. makes up 80% of the periodic table
- 26. group 1 19 electrons
- 28. mass weight of an atom