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Answers
Answer:
Melting Point: The temperature at which the solid changes into liquid at the atmospheric pressure is called melting point. For example, ice melts at 0°C to form water.
Boiling Point: The temperature at which the liquid boils and changes into gaseous state at the atmospheric pressure is called boiling point. For example, water boils at 100°C to form water vapour (at 76 cm pressure).
Latent Heat of Fusion: The heat energy absorbed during the melting of ice is stored in the water formed, this energy is called latent heat of fusion. The amount of heat energy that is required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point is known as the latent heat of fusion.
Latent Heat of Vaporisation: The heat energy absorbed by water when it changed its phase to steam, this hidden heat is called latent heat of vaporisation.
Conditions Affecting Melting Point and Boiling Point
NCERT Class 9 Science Lab Manual - Melting Point of Ice and Boiling Point of Water 1
Materials Required
Two thermometers, (Celsius scale), boiling tube, a glass rod, two iron stands, a bunsen burner, wire gauze, beakers, tripod stand, distilled water, ice cubes prepared from distilled water.
Answer:
The Point at which ice starts melting is known as melting point of Ice.
OR
The point at which ice starts melting and changes its state to liquid is known as Melting point of Ice.
The melting point of Ice is 0°C.
Explanation:
If we kept ice at 0°C the then it starts melting and changes its state to liquid.