Across
- 6. vertical columns on the periodic table
- 7. reactions that absorb heat
- 8. able to be shaped into something else
- 9. protons + neutrons
- 13. substance that allows electricity to flow easily
- 14. a stable subatomic particle in all atomic nuclei
- 16. all the elements to the left of the staircase
- 18. function describing the orbit of electrons around an atom
- 21. chemically inactive
- 24. the number of valence electrons is equal to the atoms main group number
- 25. a chemical substance that connot be broken down into other substances
- 26. second family/group
Down
- 1. seventh family/group
- 2. all of the elements to the right of the staircase
- 3. combining substances to make a new substance
- 4. a particle of matter
- 5. central core of an atom consisting of protons and neutrons
- 10. all of the elements touching the staircase [excluding Aluminum]
- 11. shiny
- 12. able to be drawn into wire
- 15. eighth family/group
- 17. neither a conductor or insulator
- 19. reactions that release heat
- 20. first family/group
- 22. horizontal rows on the periodic table
- 23. a stable subatomic particle with a negative electric charge
- 27. a subatomic particle with no electric charge