Science practical
EXPERIMENT–5 (PHYSICS) To determine the melting point of ice Object: To find the temperature at which ice melts and to study the change of state from solid to liquid. Apparatus Required: Beaker, clean crushed ice, thermometer, glass rod. Theory: The melting point is defined as the temperature at which a solid changes into a liquid under normal atmospheric pressure. When ice is heated, its temperature increases until it reaches 0°C. At this point, the ice begins to melt and the temperature remains unchanged until all the ice is converted into water. This constant temperature is known as the melting point of ice. Observation: During heating, the thermometer reading increases and then stays fixed at 0°C while the ice changes into water. Result: The melting point of ice is observed to be 0°C. Conclusion: Ice melts and changes into water at a constant temperature of 0°C. Precautions: • Use pure and finely crushed ice. • Ensure the thermometer bulb does not touch the beaker. •Stir ...













