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प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
पर्याय
Chemical change
Physical change
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उत्तर
Physical change
Explanation:
Making a fruit salad with raw fruits is a physical change because the fruits' chemical properties do not change; only their physical appearance has altered.
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संबंधित प्रश्न
Solve this crossword by using the clues that follow.
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1. It is the change that takes place in case of swinging pendulum of a clock.
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change
Make a list of different types of changes with example.
A burning candle shows both physical and chemical changes. Explain ?
Given reason:
Cutting of a cloth piece is a physical change, though it cannot be reversed.
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
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. |
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
In a solution of salt in water, water is the solute
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
