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प्रश्न
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
उत्तर
Freezing Point.
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संबंधित प्रश्न
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Write true or false for the statement.
Deforestation is a man-made change
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Define a chemical change. Give two examples of the above changes.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Water is known as a universal solvent. Why?
______ is the Universal Solvent.
