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प्रश्न
Classify the following changes as physical or chemical.
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उत्तर
- boiling — Physical
- curdling of milk — Chemical
- photosynthesis in plants — Chemical
- melting of a solid (wax) — Physical
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Dissolving salt in water is a reversible change.
Make a list of different types of changes with example.
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
The rusting of an iron object is called :
Classify the following as a physical or a chemical change.
Melting of wax
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Select the chemical changes from the following list of changes
Change of seasons
What is the difference between dissolution of sugar and burning of sugar ?
Give two examples for the following case:
Physical changes which are not reversible
