Across
- 2. Neutral's charge
- 7. Number of protons in the nucleus
- 10. anything that takes up space and has mass
- 11. Positively charged part of an atom
- 12. Center of an atom
- 15. Negatively charged part of an atom
- 16. Electron's charge
Down
- 1. Organization of the elements
- 3. The amount of space something takes up
- 4. The outermost area of the atom most often called
- 5. Simplest form of matter that has a characteristic set of properties
- 6. Quantity of matter in a physical body
- 8. A neutral charge and is found in the nucleus of an atom.
- 9. Atoms are mostly made out of...
- 13. Proton's charge
- 14. basic building block of all matter