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प्रश्न
True or false?
During a physical change energy is either given out or absorbed by the system.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
Fill in the blank
Burning of fuel is a _______ change.
State whether the following is physical or chemical changes.
Boiling of an egg —
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
Chemical changes are accompanied by changes in energy.
Distinguish between the following.
Periodic change and non-periodic change
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Give reason.
While purchasing canned food, its expiry date should be checked.
How can a change occur in a substance?
What is the change?
