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ICSE-ELEMENTS, COMPOUNDS, SYMBOLS AND FORMULAE-EXERCISE - II
- Define: (a) Atom (b) Molecule (c) Atomicity (d) Formula
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- Why are symbols and formulae of substances important ?
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- Mention three gaseous elements and write their molecular formulae.
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- State the information's obtained from the formula of a compound.
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- State the difference between the following : (a) 2H and H2 (b) H2 O ...
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- State the number of atoms of each element, present in (a) C6 H12 O6 ...
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- Write the molecular formulae of compounds calcium oxide, hydrogen sulp...
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- Give two examples each of compounds existing in the following states :...
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