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प्रश्न
What type of energy changes is associated when ice melts?
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उत्तर
- Physical change
- Endothermic (heat energy is absorbed)
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Solve this crossword by using the clues that follow.
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1. It is the change that takes place in case of swinging pendulum of a clock.
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change
State whether the following is physical or chemical changes.
lightning —
Write true or false
Deforestation is a man-made change.
A physical change is temporary. Explain.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
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
Change of seasons
