153 videos
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1. What are the three states of matter? | ![]() |
2. How is the state of matter determined? | ![]() |
3. What is the difference between evaporation and boiling? | ![]() |
4. How does melting occur? | ![]() |
5. What is the difference between a physical change and a chemical change? | ![]() |
153 videos
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Explore Courses for Class 9 exam
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