Assignment anna 10H

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Across
  1. 2. they aren't shiny
  2. 6. the in-between non-metals and metals
  3. 7. a substance with high electrical conductivity
  4. 8. made up of single atoms
  5. 10. it's not reactive
  6. 12. partially conducts electricity
  7. 13. Where elements can be found
  8. 15. series of radioactive elements
  9. 18. a particle with 0 electrical charge
  10. 21. Its electron sharing
  11. 22. the rows in the periodictable
  12. 24. sharing of free electrons
  13. 25. a vertical column
  14. 26. a very light colourless chemical element
Down
  1. 1. second last row of metallic elements
  2. 3. Proton number of a chemical element
  3. 4. the tendency of an atom
  4. 5. odourless and colourless chemical element
  5. 9. doesn't conduct electricity
  6. 11. a negatively charged ion
  7. 13. a heavy metallic element
  8. 14. a positively charged ion
  9. 16. conducts electricity and heat
  10. 17. creator of the periodic law
  11. 19. atoms with the same atomic number
  12. 20. any of five related nonmetallic element
  13. 23. composed of matter