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प्रश्न
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
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उत्तर
If a change is permanent and irreversible it is considered a chemical change.
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संबंधित प्रश्न
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Photosynthesis cannot take place at night.
State whether the following is physical or chemical changes.
shaping a piece of glass —
What is a physical change ? Give two examples of physical changes.
The rusting of an iron object is called :
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Select the chemical changes from the following list of changes
Breaking of glass
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
