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प्रश्न
Distinguish between the following.
Physical change and chemical change
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उत्तर
| Physical Change | Chemical Change | |
| 1. | The chemical composition of a substance does not change. | The chemical composition of a substance does not remain the same. |
| 2. | Easily reversible | Not easily reversible |
| 3. | No new substance is formed | New substances are always formed |
| 4. | Melting of ice is an example of physical change. | The burning of paper is an example of chemical change. |
संबंधित प्रश्न
State the various conditions that favour the process of evaporation.
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
State whether the following is physical or chemical change.
Digestion of food —
True or false
Dissolving of a solid in liquid is a physical change.
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Match the examples of changes in List I with the correct type of change in List II.
| List I | List II |
| 1. Burning of paper | A: Physical change |
| 2. The ringing of an electric bell | B: Chemical change |
| 3. Curdling of milk | |
| 4. Electric light is switched on | |
| 5. Melting of butter |
Digestion of food is a physical change.
______ is the Universal Solvent.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
