Elements
Compounds
Nitrogen
Water
Carbon
Hydrogen chloride
Magnesium
Aluminium oxide
Calcium carbonate
Classify the following into elements and compounds:
Water, Hydrogen, Salt, Gold, Carbon dioxide, Iron
Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate