Advertisements
Advertisements
Question
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Advertisements
Solution
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | B: Chemical change |
| 4. Tarnishing of copper | B: Chemical change |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. | A: Physical change |
APPEARS IN
RELATED QUESTIONS
Try segregating the things around you as pure substances or mixtures.
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.
Ripening of fruits is a desirable change.
How do you say that the process of digestion is a chemical change ?
True or false
Is melting of ice a reversible change?
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
In a solution of salt in water, water is the solute
Physical Change: Boiling::Chemical Change: ______.
Mention a few physical properties of a substance.
Give an example of a physical change in which the color of the substance changes.
