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Can you write the formula of carbon dio...

Can you write the formula of carbon dioxide and carbon monoxide? Try to write formula for them as we have done in case of water molecule.

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  • ATOMS AND MOLECULES

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
  1. Why do some elements form diatomic or triatomic molecules? Why do elem...

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  2. What is valency?

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

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

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

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  6. How did the element hydrogen get its name?

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  7. What is an atom?

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  8. What is an Avagadro number? What is its value?

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  9. Father of modern chemistry is……..

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  10. What is the law of conservation of mass according to chemical equation...

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  11. Who proposed Law of conservation?

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  12. State the following law of constant proportions.

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  13. Define chemical combination and give an example.

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  14. Give an example for decomposition reaction.

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  15. What is a thermal decomposition reaction ? Give an example.

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  16. What is a photochemical reaction? Give one example.

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  17. Define oxidation and reduction. ? Give one example to each.

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  18. What is oxidation - reduction reaction or redox reaction ? Give one ex...

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  19. Why the apples, pears, bananas, etc. change their colour when they cut...

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  20. Write the chemical equation for tranishing of silver wear (black coati...

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