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प्रश्न
What do you observe when :
solid ammonium chloride is heated
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उत्तर
Solid ammonium chloride on heating changes into vapours (change of state) is physical change.
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संबंधित प्रश्न
What do you observe when :
a spoon of sugar is heated in a pan
Fill in the blank
An earthquake is a _______ change.
Melting of solid (wax) is a physical change.
Under which different types can the following changes be classified?
Occurrence of an earthquake.
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Under which different types can the following changes be classified?
Stretching of a spring.
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 _________.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
Observe the picture containing a kettle and note that it has salt water in it and answer the following questions:
- What is name of the process that is done to the kettle?
- What will happen to the content of the kettle?
- What kind of change is occurring on the cold surface of the metal plate?
- What can you say about the quality of water that is obtained in the beaker?
______ is the process in which something becomes different from what it was earlier.
