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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.
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उत्तर
Freezing Point.
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संबंधित प्रश्न
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Ripening of fruits is a desirable change.
How do you say that the process of digestion is a chemical change ?
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Write true or false
A natural change can also be a desirable change.
Write true or false
Deforestation is a man-made change.
Give the main differences between physical changes and chemical changes.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
Give two examples for the following case:
Physical changes which are reversible
