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Test for Water Vapour (Steam),  H₂O_(g).

Water Vapour

1)  Has no colour or smell.

2)  Has no effect on moist litmus paper,
or moist universal indicator paper - it is neutral.

3)  Will put out a lit splint.

Specific test for Water or Water Vapour.

Water or its vapour will turn blue cobalt chloride paper pink.

It will also turn white anhydrous copper(II) sulfate crystals blue.

Water vapour often condenses as a colourless liquid on cold glassware.

Water melts at 0°C  and boils at 100 °C.

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