Question

spend some time everyday with your mother in the kitchen and help find out and physical and chemical changes taking place there tabulate your data under following heads paste picture of support your answer​

Answer 1

Answer:

Physical changes - Take some ice in a glass or plastic tumbler. Melt a small portion of ice by placing the tumbler in the sun. You have now a mixture of ice and water. Now place the tumbler in a freezing mixture (ice plus common salt)

Chemical changes - Dissolve about a teaspoonful of copper sulphate (blue vitriol or neela thotha) in about half a cup of water in a glass tumbler or a beaker. Add a few drops of dilute sulphuric acid to the solution. You should get a blue coloured solution. Save a small sample of the solution in a test tube or a small glass bottle. Drop a nail or a used shaving blade into the remaining solution. Wait for half an hour or so. Observe the colour of the solution. Compare it with the colour of the sample solution saved separately (Fig. 4).

Fig.4 Change the colour of the copper sulphatesolution due to reaction with iron

Do you see any change in the colour of the solution?

Take out the nail or the blade.

Has it changed in any way?

The changes that you notice are due to a reaction between copper sulphate and iron. The change of colour of the solution from blue to green is due to the formation of iron sulphate, a new substance. The brown deposit on the iron nail is copper, another new substance. We can write the reaction as:

Copper Sulphate solution (blue) + Iron → Iron Sulphate solution (green) + Copper (brown deposit)

Explanation: hope it is helpful for you and please mark me brainiest please