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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
Classify the following as chemical or physical change:
Dissolving common salt in water.
Photosynthesis cannot take place at night.
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.
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Classify the following as a physical or a chemical change.
Boiling of water
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Compare the energy changes involved during a physical and a chemical change.
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.
