PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoCase based question:
Riya filled a kettle with water and placed it on the stove. After a few minutes, the water became hotter and bubbles started forming. Soon, steam began to come out from the kettle spout. Riya noticed that the amount of water inside the kettle slowly decreased. She wondered whether this was a physical change or a chemical change.
1. What happened to the water when it was heated?
2. What state did the water change into?
3. Is this a physical change or a chemical change?
4. Why is no new substance formed here?
5. What evidence shows that this is a change in state?
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