Chemistry assignment

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Across
  1. 2. the respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:
  2. 4. A white salt on heating decomposes to give brown fumes and yellow residue is left behind. Name the salt.
  3. 6. which one of the following will turn red litmus blue?(a)vinegar (b)baking soda (c)lemon juice (d)soft drinks
  4. 8. Which gase is used in the storage of fat and oil containing foods for a long time?
  5. 10. In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:
  6. 11. A metal that do not react with water at all?
  7. 12. which acid is found in apples?
  8. 14. used to build airplane bodies?
Down
  1. 1. on heating blue coloured powder of copper(II) nitrate in a boiling tube, copper oxide(black), oxygen gas and a brown gas X is formed. Identify the brown gas X.
  2. 3. alloy of copper and zinc?
  3. 5. In addition to sodium hydrogen carbonate, baking powder contains a substance X. Name X.
  4. 7. which one of the following will turn blue litmus red?(a)vinegar (b)lime water (c)baking soda (d)washing soda
  5. 9. which one of the following is acidic?(a) lemon juice (b) tomatoes (c)milk (d)all
  6. 13. when a magnesium ribbon is burnt in air, the ash formed is