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प्रश्न
Distinguish between the following.
Physical change and chemical change
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उत्तर
| Physical Change | Chemical Change | |
| 1. | The chemical composition of a substance does not change. | The chemical composition of a substance does not remain the same. |
| 2. | Easily reversible | Not easily reversible |
| 3. | No new substance is formed | New substances are always formed |
| 4. | Melting of ice is an example of physical change. | The burning of paper is an example of chemical change. |
संबंधित प्रश्न
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Melting of solid (wax) is a physical change.
Chemical changes are accompanied by changes in energy.
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.
The compound rust is a hydrated oxide of
True or false
Change of seasons is a non-periodic change.
Make a list of different types of changes with example.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Select the chemical changes from the following list of changes
Rotting of eggs.
Name the following.
A form of energy required for a chemical change.
