Question

Rahul kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. Sh
boiled the water for about 5 minutes and fille it in a bottle up to the brimand kept the bottle air tight till cooled down to roc
temperature
a) Why did the tiny bubbles appear?
b) Do you think tiny bubbles will disappear on heating the water taken out from the bottle? Justify your answer.​

Answer 1

Answer:

Explanation:

1 tiny bubbles appear due to procces of evaporation

2 no bubbles will not disappear because evaporation will again take place when the we will again heat the water

Answer 2

The tiny bubbles appear because -

• When we give heat energy in the water ,the heat energy is transmitted into the liquid water.

• This transmitted heat changes the liquid state of the water into the gaseous state (water vapour).

• Now,when this water vapour makes it way out from the liquid water,the bubbles are produced.

b) Yes,these bubbles will disappear when we remove the heating source because the removal of the heat source,will stop the production of water vapour and as well as the production of those bubbles.