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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
- How elements got their names? Explain all examples.
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- What is the use of symbols for elements?
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- What are the characteristics of a symbol?
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- Define the following terms. Atomicity
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- Define valaency .
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- Define Ions
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- Define element and compound. Give examples.
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- What is atomic mass?
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- How molecules are formed?
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- Mohith said "H2 differs from 2H." Justify.
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- Explain the method of writing a formula to a compound using criss-cros...
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- Write down the formulae of these compounds, using criss-cross methods?...
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- Define the terms : Molecular mass.
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- Define the terms : Formula unit mass
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- Define the terms : Mole.
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- Define the terms : Molecular mass.
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- What are the main postulates of Dalton's atomic theory? (OR) Write t...
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- What is atomicity?
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- Why do elements have different atomicities?
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- What is anion ?
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