Advertisements
Advertisements
प्रश्न
Some ice is taken in a beaker and its temperature is recorded after each one minute. The observations are listed below
| Time (in minute) | Temperature (in °C) |
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3.8 |
| 7 | 7.6 |
| 8 | 11.4 |
From the above observations, what conclusion do you draw about the melting point of ice?
Advertisements
उत्तर
- The temperature remains constant at 0°C for a period of time (from 0 to 3 minutes) even though heat is being supplied.
- After 3 minutes, the temperature starts increasing.
This indicates that the melting point of ice is 0°C. During the melting process, the heat energy supplied is used to overcome the forces holding the ice molecules together in the solid state, rather than increasing the temperature. This phase change occurs at the melting point, which is 0°C for ice.
APPEARS IN
संबंधित प्रश्न
The temperature at which a solid convert into a liquid is called its .........
Explain the term Melting Point.
Describe an experiment to demonstrate that a substance absorbs heat during melting without change in its temperature.
State the melting point of ice.
The fixed temperature at which matter changes state from solid to liquid is called ______.
A student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following (Fig. 1.1) would correctly represent the result? Justify your choice.
A puddle of water gets pooled around the glass of ice cream or a glass of ice cubes. When it is kept at room temperature. Give reason.
A change of state is a change of a substance from ______.
Explain the following effects of heat.
Change in state
Define the following:
Melting or fusion:
