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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:
Melting of butter in a pan
Fill in the blank.
A new substance is formed in a ............... change.
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
What role does energy play in initiating a chemical change ?
Classify the following changes as physical or chemical:-boiling
Write true or false
Burning of sugar is a temporary change.
Name two reversible changes.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
A physical change is generally____________.
Give two examples for the following case:
Physical changes which are reversible
