Across
- 2. conductors of electricity, chemical reactivity
- 3. quantity obtained by combining quantities together
- 6. states that matter can be changed from on into another
- 8. elements that lacks metallic properties
- 9. electron electron on edge of atom
- 11. a substance on the periodic table
- 13. negative charge
- 15. element symbol
- 19. number of protons
- 20. release of heat
- 22. smallest particle in a chemical element or compound
- 23. column of elements
- 24. thin layer of metal that has been added to outside of something
Down
- 1. positive charge
- 2. chemical element in common with typical metals
- 3. row of elements
- 4. that undergoes change during a reaction
- 5. Russian, creator of periodic table
- 7. smallest part of molecule
- 10. absorption of heat
- 12. thing that's composed of 2 or more separate elements
- 14. middle part of atom
- 16. any element in the group O(helium)
- 17. patterns of electron density
- 18. mass of atomic particle
- 21. nuetral charge