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प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
विकल्प
Chemical change
Physical change
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उत्तर
Physical change
Explanation:
Melting butter in a pan is a physical transformation since there is no change in the chemical composition of butter; only its physical state changes from solid to liquid.
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
Photosynthesis cannot take place at night.
Write true or false
Earthquake is a desirable change.
Classify the following changes as physical or chemical.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Define a chemical change. Give two examples of the above changes.
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
Match the following
| Sr. No. | A | B | C |
| 1. | Melting | Change of state from liquid to solid | Ticking of clock |
| 2. | Condensation | Change of state from liquid to gas | Formation of ice cube |
| 3. | Evaporation | Change of state from solid to liquid | Collecting flowers |
| 4. | Freezing | Change of state from gas to liquid | Ice cube to water |
| 5. | Periodic change | Occurs at irregular time intervals | Water to steam |
| 6. | Non-periodic change | Occurs at regular time intervals | Steam to water drops |
What type of energy changes is associated when ice melts?
