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Reversible and Irreversible Changes Video Lecture | Science (Curiosity) Class 7 - New NCERT

FAQs on Reversible and Irreversible Changes Video Lecture - Science (Curiosity) Class 7 - New NCERT

1. What are reversible changes?

Ans. Reversible changes are physical changes that can be reversed, meaning the original state can be restored. For example, melting ice into water can be reversed by freezing the water back into ice.

2. What are irreversible changes?

Ans. Irreversible changes are changes that cannot be reversed to return to the original state. For instance, burning wood creates ash and smoke, which cannot be converted back to wood.

3. Can you give examples of everyday reversible changes?

Ans. Yes, some common examples of reversible changes include freezing water to make ice, dissolving sugar in water, and inflating a balloon. These processes can be reversed to restore the original materials.

4. How can we identify irreversible changes?

Ans. Irreversible changes can often be identified by signs such as a change in color, the release of gas, or the formation of a new substance. For example, cooking an egg changes its structure, and this change cannot be undone.

5. Why is it important to understand reversible and irreversible changes?

Ans. Understanding reversible and irreversible changes helps us in everyday life and science. It allows us to predict outcomes in various processes, such as cooking, recycling, and material preservation, and informs us about conservation and sustainability practices.

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Oct 05, 2025 Last updated

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	Science (Curiosity) Class 7 - New NCERT 80 videos\|224 docs\|12 tests

Science (Curiosity) Class 7 - New NCERT

80 videos|224 docs|12 tests

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