Class 9 Exam > Class 9 Videos > Science Class 9 > Quick Revision: Matter in Our Surroundings
Quick Revision: Matter in Our Surroundings Video Lecture | Science Class 9
FAQs on Quick Revision: Matter in Our Surroundings Video Lecture - Science Class 9
| 1. What are the three states of matter? |  |
Ans. The three states of matter are solid, liquid, and gas.
| 2. How can a solid change into a liquid? | |
Ans. A solid can change into a liquid through the process of melting, where it gains enough heat energy to overcome its attractive forces and change its state.
| 3. What is evaporation? | |
Ans. Evaporation is the process by which a liquid changes into a gas at a temperature below its boiling point.
| 4. How is condensation different from evaporation? | |
Ans. Condensation is the process by which a gas changes into a liquid, while evaporation is the process by which a liquid changes into a gas.
| 5. What is sublimation? | |
Ans. Sublimation is the process by which a solid changes directly into a gas without passing through the liquid state.
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Video Description: Quick Revision: Matter in Our Surroundings for Class 9 2025 is part of Science Class 9 preparation.
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