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प्रश्न
Differentiate between a physical change and a chemical change with reference to – Formation of products.
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उत्तर
| Physical change | Chemical change |
| No new products are formed. | New products are formed. |
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Melting of butter in a pan
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Write true or false for the statement.
Deforestation is a man-made change
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Distinguish between the following.
Physical change and chemical 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. |
Select the chemical changes from the following list of changes
Breaking of glass
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
