Differentiate between melting and freezing.
Differentiate between melting and freezing.
The differences between melting and freezing are:
Melting Freezing - Gradual change of state from solid to liquid by absorbing heat from surroundings is called melting.
- Gradual change of state from liquid to solid by leaving heat to surroundings is termed as freezing.
2. The temperature at which solid transforms to liquid is called melting point of the concerned substance.
2. The temperature at which a liquid transforms to solid by leaving heat is termed as freezing point of the concerned substance.
3. Heat is required to supply from external source.
3. Heat is required to take away from the substance.
4. Volume of the substance increases.
4. Volume of the substance decreases.
5. Internal energy of the substance increases.
5. Internal energy of the substance decreases.
6. Examples are;
Ice to water, solid wax to liquid wax, melting of iron ore in a furnace etc.
6. Examples are;
water to ice, liquid wax to solid wax etc.
The differences between melting and freezing are:
| Melting | Freezing |
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2. The temperature at which solid transforms to liquid is called melting point of the concerned substance.
| 2. The temperature at which a liquid transforms to solid by leaving heat is termed as freezing point of the concerned substance.
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3. Heat is required to supply from external source.
| 3. Heat is required to take away from the substance.
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4. Volume of the substance increases.
| 4. Volume of the substance decreases.
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5. Internal energy of the substance increases.
| 5. Internal energy of the substance decreases.
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6. Examples are; Ice to water, solid wax to liquid wax, melting of iron ore in a furnace etc.
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6. Examples are; water to ice, liquid wax to solid wax etc.
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