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Thermal Decomposition
Preliminary Examination of Solid
Before Heating
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Observations
|
Possible Deductions
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| Coloured compound |
Transition metal
compound |
| White compound |
Group I, II and
III metal compounds; ammonium compounds, zinc compounds |
| Powdery solid or
fine powder |
Likely to be a
carbonate |
| Large crystals |
Likely to be salts
such as chlorides, nitrates and sulphates |
Grey powder / silver
powder
Grey granules with metallic lustre |
Metals such as
Mg, Al, Zn & Fe |
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to see the colour and texture of common substances.
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