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प्रश्न
Under which different types can the following changes be classified?
Stretching of a spring.
उत्तर
Physical change
संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
What do you observe when :
solid ammonium chloride is heated
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
Chemical changes are accompanied by changes in energy.
What role does energy play in initiating a chemical change ?
Distinguish between the following.
Periodic change and non-periodic change
Give reason.
A dry handkerchief gets wet at once on dipping in water, but it takes longer for a wet handkerchief to dry.
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 _________.
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
______ is the process in which something becomes different from what it was earlier.
