PERIODIC TABLE

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Across
  1. 3. A POISONOUS GAS THAT IS USED TO SERILISE TOWN WATER AND SWIMMING POOL WATER.
  2. 5. ELEMENTS THAT ARE MALLEABLE, DUCTILE , CONDUCT ELECTRICITY & ALL BUT ONE ARE SOLIDS AT ROOM TEMPERATURE.
  3. 7. AN INERT GAS THAT IS USED IN PARTY BALLONS AND BLIMPS.
  4. 10. A METAL ELEMENT WHICH BURNS WHEN LIT AND GIVES OFF HYDROGEN WHEN REACTED WITH HYDROCHLORIC ACID.
  5. 12. AN INERT GAS USED IN FLASHING ADVERTISING SIGNS.
  6. 13. A WORD THAT MEANS THAT AN ELEMENT DOES NOT REACT WITH OTHER SUBSTANCES.
Down
  1. 1. AN INERT GAS THAT IS USED IN WELDING METALS.
  2. 2. VERTICAL ROWS IN THE PERIODIC TABLE.
  3. 4. A METAL ELEMENT THAT REACTS WITH COLD WATER TO GIVE OFF HYDROGEN.
  4. 6. HORIZONTAL ROWS OF ELEMENTS IN THE PERIODIC TABLE.
  5. 8. A NON METAL ELEMENT THAT CONDUCTS ELECTRICITY.
  6. 9. A METAL ELEMENT THAT IS A DENSE LIQUID AT ROOM TEMPERATURE.
  7. 11. A RUSSIAN SCIENTIST THAT WAS RESPONSIBLE FOR ORGANISING ELEMENTS INTO A PERIODIC TABLE.