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प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
पर्याय
Chemical change
Physical change
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उत्तर
Physical change
Explanation:
Boiling water to produce steam is a physical change since it merely changes its condition from liquid water to steam (gaseous) without changing its chemical composition.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Burning of paper and wood
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Give four difference between physical and chemical changes.
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.
Gas exists in three states as solid, liquid, and gas.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
