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प्रश्न
Which of the following are physical changes and which are chemical changes ?
Freezing of water
पर्याय
Physical change
Chemical change
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उत्तर
Freezing of water – Physical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
Try segregating the things around you as pure substances or mixtures.
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Photosynthesis cannot take place at night.
Classify the following as physical or chemical change :
Condensation of steam
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
Grinding of wheat grain changes its size. It is a ____________ change.
Explain the characteristics of physical change with examples.
