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प्रश्न
State whether the following is physical or chemical changes.
lightning —
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उत्तर
chemical change,
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Burning of paper and wood
Classify the following changes as physical or chemical:-boiling
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
burning of sugar —
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Make a list of different types of changes with example.
Define a chemical change. Give two examples of the above changes.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
What type of energy changes is associated when ice melts?
