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प्रश्न
State whether the following is physical or chemical changes.
cutting wood into small pieces —
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उत्तर
physical change,
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संबंधित प्रश्न
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Classify the following as physical or chemical change :
Growth of a plant
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Select the chemical changes from the following list of changes
Boiling of milk.
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 |
