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प्रश्न
Classify the following as physical or chemical change :
Condensation of steam
पर्याय
Physical change
Chemical change
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उत्तर
Condensation of steam – Physical change
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संबंधित प्रश्न
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 |
Write short answer.
Give two examples of periodic changes
Classify the following changes as physical or chemical: curdling of milk
Write true or false
Melting of ice is a physical change.
True or false
Is melting of ice a reversible change?
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.
Which of the following are physical changes and which are chemical changes ?
Define a chemical change. Give two examples of the above changes.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
