The Periodic Table of Elements

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12345678910111213141516171819202122
Across
  1. 4. This element is used as a shield from X-rays.
  2. 5. Metals of this group are very reactive and all have one valence electron.
  3. 6. This element is found in glow-sticks and has an atomic number of 15.
  4. 11. The atomic symbol for this element is K.
  5. 12. The elements in this group readily react with metals and are found in group 17.
  6. 13. This noble gas is found in the sun.
  7. 15. There are two of these atoms in one molecule of water.
  8. 16. This element enters a covalent bond with Sodium to make table salt.
  9. 21. This is a term used to describe the following elements: H, O, F, Br, I, N, and Cl.
  10. 22. This element has an atomic mass of 79.904.
Down
  1. 1. The atomic symbol for this element is Au.
  2. 2. This metal is named after a state in the USA.
  3. 3. This is the most electronegative element.
  4. 7. The burning of the Alkaline Earth metal is responsible for the red colour of fireworks.
  5. 8. This group starts at element 89.
  6. 9. Found in the middle of the periodic table, Iron, Titanium, Gold, Silver, and Copper, are all examples of this type of metal.
  7. 10. FE is the symbol for this metal.
  8. 14. This element is a liquid at room temperature.
  9. 17. The most abundant gas in Earth's atmosphere.
  10. 18. The first element on the periodic table.
  11. 19. The burning of this Alkaline Earth metal is responsible for the green colour of fireworks.
  12. 20. This element is found in batteries.