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Fun Video: States of Matter Video Lecture - Crash Course: Class 9

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FAQs on Fun Video: States of Matter Video Lecture - Crash Course: Class 9

1. What are the three states of matter?
Ans. The three states of matter are solid, liquid, and gas.
2. How are the particles arranged in a solid state of matter?
Ans. In a solid state of matter, the particles are tightly packed and arranged in a fixed pattern.
3. What happens during the process of melting?
Ans. During the process of melting, a solid changes into a liquid as it absorbs heat energy and the particles gain enough energy to break free from their fixed positions.
4. What is sublimation?
Ans. Sublimation is the process by which a solid turns directly into a gas without passing through the liquid state.
5. How does temperature affect the state of matter?
Ans. Temperature affects the state of matter by changing the amount of energy the particles have. At low temperatures, particles are closer together and move more slowly, resulting in a solid. As temperature increases, the particles move faster and can slide past each other, resulting in a liquid. At even higher temperatures, the particles move very quickly and spread apart, resulting in a gas.
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01:30 Question 1
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