Question

deacribe an activity to determine the boling and melting point of water

Answer 1

Boiling point of water is 100th degree C     and    melting point of water is 0 degree C

Answer 2

Determination of boiling point of water:

• In a beaker take some water and insert a thermometer in it with the help of a clamp.
• Put the beaker on a tripod stand and heat the apparatus with the help of kerosene burner slowly.

• Observe what happens to water.

• You will observe a steady stream of bubbles. This temperature is the boiling point of water.

Determination of melting point of ice:

• Take crushed ice in a beaker and insert a thermometer in the beaker by hanging it from the clamp of the stand in such a way that the bulb of the thermometer is completely inside the ice.

• Wait for some time and keep recording the temperature after small intervals of time.

• Note down the temperature when ice just starts melting.

• Let the bulb of the thermometer remain in mixture of ice and water for some more time and keep recording the temperature. This temperature is the melting point of ice.