Across
- 5. an evaporation
- 8. an neutron
- 9. an gas
- 11. an molecule
- 14. an solid
- 15. an freezing
- 16. an proton
Down
- 1. an subatomicparticles
- 2. an atomicmass
- 3. an electron
- 4. an condensation
- 6. an atomicnumber
- 7. an melting
- 10. an atom
- 12. an liquid
- 13. an element