Are the Crystals of Salts really Dry? Activity 2.15 Heat a few crystals of copper sulphate in a dry boiling tube. What is the colour of the copper sulphate after heating? Do you notice water droplets in the boiling tube? Where have these come from? Add 2-3 drops of water on the sample of copper…

Chemicals from Common Salt By now you have learnt that the salt formed by the combination of hydrochloric acid and sodium hydroxide solution is called sodium chloride. This is the salt that you use in food. You must have observed in the above Activity that it is a neutral salt. Seawater contains many salts dissolved…