Atoms and Periodic Table

1234567891011121314151617181920212223242526
Across
  1. 4. able to be hammered or pressed without breaking or cracking
  2. 5. groups families 1-2 and 13-18 on the periodic table
  3. 8. most of the mass of an atom is located here
  4. 10. describes solid non-metals
  5. 11. a charged subatomic particle found in the nucleus
  6. 13. highly reactive metals with one valence electron
  7. 15. an element in period 3 that has seven valence electrons
  8. 17. able to be drawn out into a thin wire
  9. 18. number protons + neutrons in an element
  10. 20. a gas with six valence electrons
  11. 21. a horizontal row on the periodic table
  12. 24. electrons found in the outermost energy level
  13. 26. shiny solids that conduct heat and electricity well
Down
  1. 1. number the number of protons in an atom
  2. 2. the number of valence electrons for phosphorus
  3. 3. earth metals group two on the periodic table
  4. 6. this atom has 32 protons
  5. 7. have properties of both metals and non-metals
  6. 9. gases stable elements that do not react easily with other elements
  7. 12. the smallest subatomic particle
  8. 14. a vertical column (family) on the periodic table
  9. 16. the neutral subatomic particle
  10. 19. a solid non-metal halogen
  11. 22. elements with seven valence electrons
  12. 23. a metalloid with six valence electrons
  13. 25. a non-metal with four valence electrons