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प्रश्न
State whether the following is physical or chemical changes.
Boiling of an egg —
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उत्तर
chemical change.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
Melting of wax —
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
Under which different types can the following changes be classified?
Conversion of milk into yoghurt.
Explain in brief the involvement of energy in physical and chemical changes.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
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.
What is the change?
Cut vegetables turn brown when exposed to air, this is due to ______.
