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Discuss with your friends if the carbon ...

Discuss with your friends if the carbon dioxide that you breathe out and the carbon dioxide they breathe out are identical. Is the composition of the carbon dioxide of different sources same?

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
  1. Recall the burning of magnesium ribbon in air. Do you think mass is co...

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  2. 100g. of mercuric oxide decomposes to give 92.6g. of mercury and 7.4g....

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  3. Discuss with your friends if the carbon dioxide that you breathe out a...

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  4. Which postulate of Dalton’s theory is the result of the law of conserv...

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  5. Which postulate of Dalton’s theory can explain the law of constant pro...

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  6. Where does the matter charcoal go?

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  7. Wet clothes dry after sometime – where does the water go? What happens...

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  8. What happens to sulphur on burning it in air?

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  9. Do you think that a chemical reaction has taken place in the flask? Gi...

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  10. What difference do you observe in percentage of copper, carbon and oxy...

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  11. How do we write the symbols for calcium, chlorine, chromium ?

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  12. Would you be able to recognise the elements of the table -2, have symb...

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  13. Why do some elements be monoatomic?

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  14. Why do some elements form diatomic or triatomic molecules? Why do elem...

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  15. What is valency?

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  16. Can you write the formula of carbon dioxide and carbon monoxide? Try ...

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  17. How many molecules are there in 18 grams of water? How many atoms are ...

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  18. Did you notice the colour coating on silver and copper articles?

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  19. How did the element hydrogen get its name?

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  20. What is an atom?

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