Across
- 2. to right of stairstep; gases or powders, poor conductors
- 4. aka synthetic; not found in nature
- 6. aka transition metal; groups 3-12
- 9. shows protons & neturons in nucleus & electons in shells
- 11. center of atom; has protons & neutrons
- 13. element that is too large & unstable & breaks down giving off radiation
- 17. found to left of stairstep; shiny, malleable, ductile, good conductors
- 18. smallest basic unit of atom
- 20. number of protons & neutrons of 1 isotope
- 21. subatomic particle that has no charge
- 22. takes up most space of atom where electrons are found
- 23. has properties of both metals & nonmetals; found along stairstep
- 24. horizontal rows that have the same number of electron shells
Down
- 1. subatomic paticle that has a positive charge
- 3. average of all isotopes (or mass numbers) of an element
- 5. aka Lewis Dot Diagram; shows element symbol & valence electrons
- 7. bonding of metal atoms where electrons are not held tightly & go from atom to atom
- 8. aka family; vertical columns that have the same number of valence electrons
- 10. able to be drawn into wires
- 12. can be conductor in certain cicumstances
- 14. number of protons
- 15. atom with different number of neutrons
- 16. subatomic particle that has a negative charge
- 19. able to be hammered or rolled into sheets