Across
- 3. any solid liquid or gas
- 4. the smallest part of matter
- 7. the number of protons and electrons
- 9. how much space an object takes up
- 12. the mass of an element
Down
- 1. A thing that has flying molecules
- 2. A particle in the nucleus of the atom with a positive charge
- 5. A thing that that has moving molecules
- 6. A chargeless particle in the nucleus of the atom
- 8. the amount of matter in an object
- 10. A pure substance made of only one type of atom
- 11. the mass of one atom
- 13. a thing with tight molecules
- 14. A particle in the orbit of the atom with a negative charge