Across
- 3. number of protons in an atom
- 5. positive parts of an atom
- 6. 107 is the weight of the element
- 10. neutral or no change
- 11. same valence electrons
- 13. they are usually gases but include dull, and brittle solids
- 14. the reaction needing valence shells
- 15. changes chemical properties from left to right
- 16. the building block of everything
- 17. deals with atoms and the big bang
Down
- 1. anything that is touchable
- 2. the number of electrons on the farthest part of the electron cloud
- 4. really shiny, has the best conductivity, and the greatest malleability
- 7. negative part of an atom
- 8. Kr is the symbol of the element
- 9. they deal with things like chemicals and discover new things
- 12. are not shiny, have a semi-conductive property, and are brittle
- 15. a table with all elements
- 16. number of protons and neutrons in the nucleus