Question

why the bubbles are formed during boiling?​

Answer 1

Answer:

when we heating the water the bubbles are normally formed because the water is heating

Answer 2

Bubbles formed because the water molecules which were in liquid state gets converted into gasous state

at the bottom of hot pot and due to pressure of water from surrounding the water vapour can't diffuse and form spherical shaped bubble which due to low density rises up and we are able to notice bubbles