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प्रश्न
Molecules of a substance are always in a state of............ and so they possess .............
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उत्तर
Molecules of a substance are always in a state of motion and so they possess kinetic energy.
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संबंधित प्रश्न
The temperature at which a solid convert into a liquid is called its .........
Differentiate between melting point ,giving atleast one example of each.
Explain the term Melting.
Explain the term Melting Point.
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?
What are the changes of state in water? Explain.
What is melting? Give example.
Water as ice has a cooling effect, whereas water as steam may cause severe burns. Explain these observations.
In an endothermic process, the speed of the molecules is ______ hence they move faster.
A change of state is a change of a substance from ______.
