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प्रश्न
State whether the following is physical or chemical change.
Digestion of food —
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उत्तर
chemical change.
APPEARS IN
संबंधित प्रश्न
Explain the following giving an example.
Pure substance
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Write true or false
Rusting of iron is a chemical change.
True or false
Dissolving of a solid in liquid is a physical change.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical 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 |
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Water is the universal solvent. Why?
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
