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प्रश्न
How can a change occur in a substance?
उत्तर
A change can occurs in a substance by an alteration in the properties such as colour, texture and the state of the substance since there is formation of a new substance.
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संबंधित प्रश्न
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?
During a physical change energy is either given out or absorbed by the system.
Under which different types can the following changes be classified?
Conversion of milk into yogurt.
Under which different types can the following changes be classified?
Stretching of a spring.
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 _________.
Paper, LPG, CNG petrol, etc, are ______ substances.
The difference between initial state and the final state is called change.
______ is the process in which something becomes different from what it was earlier.
