Greenhill Grammar school, Oldham

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Chem-Cross Symbol

 

07_ChemXword

   

   Accross
 1.    Methyl Alcohol.
 5.    Caustic Soda.
 8.    The source of Bromine in sea water.
10.    Atomic weight of sodium.
11.    Formed when aluminium reacts with nitrogen.
12.    Element associated with Madame Curie.
14.    Allotrope of oxygen.
15.    The weight of 8 atoms of calcium.
18.    Hydroxyl group.
20.    Phosphine.
21.    The substance from which hydrogen peroxide is usually
              prepared in the lab.
23.    2CO+O2=
25.    anhydrite.
28.    Compounds containing this element give a red flame on
               a platinum wire.
29.    A very light metal.
30.    NH4NO2= _ +2H2O
31.    Tungsten carbide.
34.    At. weight of calcium.
35.    Two molecules of the compound which when heated gives
                nitrous oxide     (laughing gas).

    Down
 1.    Aluminium Bronze.
 2.    3 molecules of manganous oxide.
 3.    -xy-en - a gas.
 4.    The gas prepared by the action of bromine on moist red
               phosphorus.
 5.    3Mg+_ = Mg3N2
 6.    2KNO3 = 2KNO2+_
 7.    Phosphorous acid.
 9.    See 12 across.
13.    Phosphoric acid.
16.    _ +O2 = 2H2O
17.    Lanthanum.
19.    Sulphuretted hydrogen.
21.    The white precipitate formed when barium chloride is added
               to a solution of a sulphate.
22.    Two molecules of the substance on which water reacts to
               give acetylene.
24.    CaCO3 = CaO + _
26.    The metal obtained from the electrolysis of alumina.
27.    Nitrogen trioxide.
32.    Carbohydrates contain the elements _ , _ and oxygen.
33.    Cyanide group.