Across
- 3. C-element symbol
- 6. bear one or more negative or positive electrical charges
- 8. # that shows the number of protons
- 9. Located in the nucleus with a positive charge
- 11. This has a negative charge
- 15. anything that has mass
- 17. under element name on the periodic table
- 18. H-element symbol
- 20. negatively charged ion
- 21. O-element symbol
Down
- 1. consist of two protons and two neutrons tightly bound together
- 2. atomic mass rounded
- 4. Can find by subtracting the mass # and atomic #
- 5. the Same amount of protons but a different # of neutrons
- 7. occurring or smaller than an atom
- 10. located in the atom where protons are found
- 12. N-element symbol
- 13. Smallest part of a substance
- 14. first word for atom
- 16. table of chemical elements
- 19. B-element symbol