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प्रश्न
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 _________.
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उत्तर
Chemical changes may involve exchange of energy in the form of light and heat.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
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.
Melting of solid (wax) is a physical change.
Distinguish between the following.
Natural change and man-made 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.
Explain in brief the involvement of energy in physical and chemical changes.
How can a change occur in a substance?
______ is the process in which something becomes different from what it was earlier.
