Across
- 4. Rule stating that volume and pressure of a gas have an inverse relationship
- 7. taught that compounds are in definite ratios
- 10. distance of electrons from nucleus
- 12. discovered protons
- 13. Rule stating that volume and temperature of a gas have a direct relationship
- 16. maximum number of electrons in first shell
- 17. an atom that has lost or gained electron(s)
- 20. groups3-12
- 21. a form of atom with varying neutron number
- 22. group 18
- 23. discovered electrons
- 24. flammability, toxicity, reactivity
- 25. group17
Down
- 1. arranged table by atomic number
- 2. a row of elements
- 3. said that electrons can gain energy and move to a higher energy level
- 5. maximum number of electrons in second shell
- 6. decreases from left to right
- 8. group2 a
- 9. group1
- 11. ability of atom to attract electrons
- 14. it has this name because people thought it is uncuttable
- 15. boiling point, shape, color, density
- 18. ions with opposite charges form a chemical _____
- 19. arranged table by atomic mass