Across
- 1. sorting elements
- 4. neutral
- 6. number of the proton in the nucleus
- 7. positive
- 8. something built or constructed
- 10. cannot change the indentity of matter
- 11. the amount of space an object takes up
- 13. entirely made up of one type of atom
- 14. the region of the negative charge
- 15. negative
- 16. particle smaller than atomi ie proton
- 17. mass of an atom
Down
- 1. characteristic of an object
- 2. the smallest component of an element
- 3. when a negative and positive make a zero
- 4. the center of an atom
- 5. what it does
- 9. anything that has mass or matter
- 12. property of a subatomic particle