Metal salt crystals. Salts are compounds that can be formed from the neutralisation of an acid. The salts here (clockwise from lower left) are: sodium chloride (table salt,NaCl); iron (II) sulphate (FeSO4); iron (III) sulphate (Fe2[SO4]3); copper (II) sulphate (CuSO4); and copper (II) carbonate (CuCO3). The latter 4 salts are intensely coloured because they contain transition metals | |
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Crédit: | Science Photo Library / Andrew Lambert Photography |
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