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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
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Define physical change. Give two examples for the above changes.
Write true or false
Earthquake is a desirable change.
Make a list of different types of changes with example.
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
What kind of change is shown by tearing off paper?
Iron pipes coated with zinc do not get rusted easily.
Give an example of a physical change in which the color of the substance changes.
