1. What type of path do the molecules in a matter follows. Explain by ging examples.
2. Why are solids rigid? Can u change the shape of solid by applying force? Give reasons.
3. A sponge can be compressed by applying some force, but its stills remain a solid. Why?
4. In which state of matter is the level of energy between the particles highest. Explain in detail.
5. Clay can be moulded into different shapes. Will you classify as a solid or liquid? Give reason to support
your answer.
6. Name any 2 factors that can change gasses to liquids.
7. Why do solid melt on heating. Explain with an example.
8. Why do gases change to liquids on cooling.
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Answer:
A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
Explanation:
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