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Recall the burning of magnesium ribbon i...

Recall the burning of magnesium ribbon in air. Do you think mass is conserved during this reaction?

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  • ATOMS AND MOLECULES

    VGS PUBLICATION-BRILLIANT|Exercise OBJECTIVE TYPE QUESTION|1 Videos

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
  1. Explain redox reactions with an experiment.

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  2. Do you get the same result if the conical flask is not closed?

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  3. Recall the burning of magnesium ribbon in air. Do you think mass is co...

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  4. 100g. of mercuric oxide decomposes to give 92.6g. of mercury and 7.4g....

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

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

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

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  8. Where does the matter charcoal go?

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

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

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

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

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

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

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  15. Why do some elements be monoatomic?

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

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  17. What is valency?

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

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

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

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