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प्रश्न
True or false?
During a physical change energy is either given out or absorbed by the system.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
What do you observe when :
solid ammonium chloride is heated
Tick (√) the correct alternative from the choice given for the following statement
When sugar is heated, its colour changes into
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?
Bursting of a cracker.
Give reason.
While purchasing canned food, its expiry date should be checked.
Explain in brief the involvement of energy in physical and chemical changes.
Fill in the blanks with the appropriate words of the statement given below:
Chemical changes may involve exchange of energy in the form of __________ and _________.
How can a change occur in a substance?
