Periodic Table

Edit Answers
123456789101112131415161718
Across
  1. 2. Elements with similar properties (5)
  2. 5. Element 12- with the symbol C (6)
  3. 7. A material made out of 2 or more different atoms (8)
  4. 8. The metals in the middle of the periodic table (10)
  5. 10. Group 7 in the periodic table (eg chlorine) (8)
  6. 13. The man who constructed the first periodic table (9)
  7. 14. This positive particle (in the nucleus) gives the number that orders the elements (6)
  8. 15. Alkali metal found in modern batteries (7)
  9. 16. 80% of elements are this (5)
  10. 17. Atoms of these are all identical (7)
  11. 18. Largest naturally occurring element with the symbol U (7)
Down
  1. 1. The simplest element (8)
  2. 3. A row in the periodic table (6)
  3. 4. The diagram that shows all the elements by mass and by properties (8,5)
  4. 6. The smallest part of matter (4)
  5. 9. Group 1 in the periodic table - including lithium, sodium and potassium (6,6)
  6. 11. Element with the symbol He (6)
  7. 12. Elements like carbon, oxygen and nitrogen (3,5)