Periodic table

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Across
  1. 2. = Elements that are good conductors of heat
  2. 3. = A subatomic particle with a positive charge
  3. 6. = A family of elements consisting of 15 elements
  4. 9. = My symbol is Ti
  5. 10. = The basis of the elements
  6. 12. = A table of the chemical elements
  7. 17. = Roughly equal to the sum of the individual particle masses of an atom
  8. 19. = My atomic number is 26
  9. 20. = A subatomic particle with a neutral charge
  10. 22. = A substance whose atoms all have the same number of protons
  11. 25. = One or 2 letter symbol that represents the element
  12. 26. = Any atom or group of atoms that bears one or more positive or negative electrical charges
  13. 28. = My atomic mass is 16
  14. 30. = My atomic mass is 1
Down
  1. 1. = My atomic number is 6
  2. 4. = My atomic number is 45
  3. 5. = My symbol is Zn
  4. 7. = A series of metallic elements on the periodic table
  5. 8. = My atomic mass is 70
  6. 11. = Elements that have properties between metals and nonmetals
  7. 13. The number of protons in the nucleus
  8. 14. = My symbol is Ag
  9. 15. = What the element is called
  10. 16. = Members of a family of an element that all have the same number of protons but different numbers of neutrons
  11. 18. = The vertical columns on the periodic table
  12. 21. = A horizontal row of the periodic table
  13. 23. = A subatomic particle with a negative charge
  14. 24. = My atomic mass is 28
  15. 27. = My symbol is Ne
  16. 29. = Contains elements with the same number of electrons