Across
- 6. number number of protons plus the number of electrons
- 7. the center of an atom
- 9. negative charge
- 10. all parts the same
- 11. able to be stretched
- 13. symbol letters representing something
- 14. neutral charge
- 15. number number of protons plus the number of neutrons
Down
- 1. a part or aspect of something
- 2. positive charge
- 3. building block of all things
- 4. table table of elements
- 5. any of two or more forms of a chemical element
- 8. all parts different
- 12. electrons an electron of an atom located in the outer most shell