The Periodic Table

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Across
  1. 3. Atomic number of aluminium
  2. 7. ... is the latin name of potassium
  3. 11. The mass of a single atom
  4. 14. Element with the chemical symbol of Na
  5. 17. What do we call the table that shows all the elements?
  6. 20. There are ... metals in the first 20 elements of the periodic table
  7. 21. Rows in a periodic table.
  8. 22. Element with the atomic number of 5
  9. 23. There are ... known elements on the periodic table.
  10. 24. The first element on the periodic table is Helium. (TRUE/FALSE)
  11. 25. How many elements were made in the laboratory?
Down
  1. 1. One or Two letters that represent an element.
  2. 2. There are ... non-metals in the first 20 elements of the periodic table
  3. 4. If there is a second letter in the chemical symbol, it is always ....
  4. 5. Number of protons an atom contains
  5. 6. The man who invented the periodic table
  6. 8. The atoms of the elements increase in ... as you read across each row.
  7. 9. Columns in a periodic table.
  8. 10. Natrium is the ... name for sodium.
  9. 12. The chemical symbol of lead is
  10. 13. Element with the chemical symbol of K.
  11. 15. The heaviest element
  12. 16. Chemical symbol of magnesium
  13. 18. ... atoms has the highest mass
  14. 19. How many elements have scientists discovered naturally?
  15. 21. Elements in the same column share similar chemical and ... properties.