| Physical Change | Chemical Change |
|---|---|
| 1. No new substance is formed. | 1. New substance is formed. |
| 2. It is a reversible change. | 2. It is irreversible change. |
| 3. The properties of constituents are retained. | 3. The properties of constituents are not retained. |
| 4. No new substance is formed. | 4. Completely new substance is formed. |
Define latent heat of vaporization.
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Why is mixture called impure substance?
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Why do people perspire a lot on a hot humid day?
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Why is it advisable to use pressure cooker at higher altitudes?
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1 kg cotton and 1 kg sand, which is more denser? Why?
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