Across
- 2. / 2 or more atoms
- 6. Mass / average mass of the types of an atom.
- 8. / same substance throughout
- 10. Metals / all have 1 electron in their outer shell
- 12. / 2 or more substances that are physically combined
- 13. Gasses / all have full shells
- 14. Number / the amount of protons and neutrons
Down
- 1. / vertically organized
- 2. / forms and diagonal line on the PT
- 3. Levels / the orbit the electrons follow
- 4. / visibly different substances throughout
- 5. / all have 7 electrons in their outer shell
- 7. / more then one type of atom
- 9. / made of 1 type of atom
- 11. / horizontally organized