Question

Praveen heated a beaker containing water. He took a few coloured paper
pieces and added them in the water. He observed that the paper pieces
started moving. Then, he heated a piece of iron, but did not observe any
movement of iron particles. Why? Explain.​

Answer 1

Answer:

• when a liquid, freeze water is heated, the molecular matter of water start moving upward from the bottom of the container.
• this reminds us of the fact that the energy flow in heating is such that the cold metal deposits at the bottom and as the matter gets heated if tends to flow upwards.
• and at the boiling point, the water molecules get vaporize and turned themselves into steam.
• because of this movement, the bits of paper dipped in the container also show movement, as their mass is too weak when compared to the mass of water moving due to heating.
• that is why the movement of water due to heat does not have any effect on the iron particles and they do not move.

hope it helps

Answer 2

Answer:

hbfjndjbfhf fhfjfjf hffhfhdkd sksuejnf fjdjdd djkskks sksjdcnc cjcjcjc cjcjcjc n nndjkdd jcjchb udnsl djcnfif jflkld jdjdc i flkkkdfhbf judjdkjfjkf fjfjkk djdjd jdmkkx jfjei idkdk didk idididls orjssm

Explanation: