mia
Across
- 3. on the right side of the periodic table
- 5. something that can be found in milk
- 7. vertical columns on a periodic table
- 11. inert gas
- 14. chemical symbol is TI
- 17. atomic weight is 11
- 18. on the left side of the periodic table
- 21. the atomic weight is 4
- 23. any group of rare gases
- 25. a family that has 5 electrons
Down
- 1. The number of protons in a nucleus
- 2. inert gas
- 4. gas in the periodic table
- 5. Number of protons and neutrons in a nucleus
- 6. a symbol which determines the chemical
- 8. has the atomic number of 5
- 9. metals that make up the first column (group) of the periodic table
- 10. something that has groups and periods
- 12. subatomic particle
- 13. average mass of an atom of an element
- 15. atomic weight of 7
- 16. chemical symbol is mg
- 19. substance composed of atoms with identical atomic number.
- 20. atomic weight is 1
- 22. A complex consisting of two atoms.
- 24. horizontal rows on a periodic table
- 26. the atomic weight is 56