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प्रश्न
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
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उत्तर
Yes, rust is different from iron. It is a brown powder of iron oxide.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Select the chemical changes from the following list of changes
The carbon cycle.
Give the reason why the following is considered as chemical changes.
A piece of magnesium strip is dropped into a beaker containing dilute hydrochloric acid.
Physical Change: Boiling::Chemical Change: ______.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Keeping a stone in sunlight for few hours is ______.
Cutting a log of wood into pieces is a chemical change.
