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How elements got their names? Explain al...

How elements got their names? Explain all examples.

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I. Sometime elements are named based on their property
Ex:1) The latin name for water is "hydro".
2) The latin word for acid is 'oxy'.
hence the gas that forms acid is 'oxygen'.
II. Place of discovery of element can also play a role in its naming.
Ex: the gas that was first discovered in the sum (Greek name for the sun is "hellos") was named as 'helium'.
III. Sometimes the elements were named to honour the scientists.
Ex: Einseinium, Fermium, Rutherfordium and Mendelvium etc.
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VGS PUBLICATION-BRILLIANT-ATOMS AND MOLECULES-ESSENTIAL MATERIAL FOR EXAMINATION PURPOSE (4 MARK)
  1. How elements got their names? Explain all examples.

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  2. Define the following terms. Atomicity

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  3. Define the following terms. Ions

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  4. Explain the method of writing a formula to a compound using criss-cros...

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  5. Define the terms : Molecular mass.

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  6. Define the terms : Formula unit mass

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  7. Define the terms : Mole.

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  8. What are the main postulates of Dalton's atomic theory? (OR) Write t...

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  9. what is the defination of incident ray and reflected ray?.

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  10. Illustrate the concept of mole through a diagram.

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  11. How can you appreciate John Dalton for proposing his atomic theory?

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  12. How do you feel after studying the symbols and formulae of different e...

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  13. Describe the experiment conducted by Joseph L., Proust, which lead him...

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  14. Write down the formulae of these compounds, using criss-cross methods?...

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  15. Write down the formulae of these compounds, using criss-cross methods?...

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  16. Write down the formulae of these compounds, using criss-cross methods?...

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  17. Write down the formulae of these compounds, using criss-cross methods?...

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  18. Write down the names of compounds represented by the following formula...

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  19. What are the rules you have to follow while writing a chemical formula...

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  20. Calculate the molecular weight H2,O2,Cl2,CO2CH4,C2H6,C2H4,NH3,CH3OH.

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