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VGS PUBLICATION-BRILLIANT-ATOMS AND MOLECULES-ESSENTIAL MATERIAL FOR EXAMINATION PURPOSE (1 MARK)
- What is an atom?
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- Is 'Na' an element or compond? Why
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- Is O2 an element or compound? Why
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- What is an Avagadro number? What is its value?
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- Which instrument is used to calculate the atomic mass exactly?
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- What is atomic mass?
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- How molecules are formed?
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- Why Is it not possible to see an atom with naked eye?
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- What is a chemical formula?
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- How many atoms are present in (i) H2S molecule and (ii) PO4^3-ion.
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