Across
- 1. water purifier
- 3. negatively charge particle
- 5. reaction where heat is absorbed
- 7. tabular arrangement of element
- 13. planetary model of the atom
- 14. h2o
- 16. a way of expressing large and small numbers
- 17. explosion of a star cause it release too much gases
- 19. ability of gas to expand
- 21. central part of an atom
- 23. Positively charged element
- 26. used in balloon
- 27. air that we breath
Down
- 1. study of matter and changes it undergoes
- 2. aurum
- 4. "argos" inactive
- 5. space of the atom where electrons are found
- 6. rat poison
- 8. substance that cannot be broken down
- 9. basic unit of matter
- 10. Zero charged particle
- 11. last name of the person who proposed the law of triads
- 12. "Alumen" or alum
- 15. greek word "titan"
- 17. a substance that dissolves a solute
- 18. Positively charge particle
- 20. force exerted by gas molecules
- 22. dissolves in a solvent
- 24. Negatively charged element
- 25. space occupied by gas particles