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ATOMS , MOLECULES AND IONS
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BHARATI BHAWAN (ENGLISH)-ATOMS , MOLECULES AND IONS -Short Answer Questions
- State any two postulates of Dalton's atomic theory .
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- State the law of constant proportion .
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- 5.2 g of substance A reacts with 2.7 g of substance B to produce 7.9 g...
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- What are the characteristics of an atom ?
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- What information do you get from the symbol of an element ?
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- Explain 'relative atomic mass' .
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- Define a molecule .
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- Mention any two characteristics of a molecule .
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- What are ions ?
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- What is a mole of a substance ?
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- Write the chemical formula of the following substances : (a) Sodium ...
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- What are polyatomic ions? Give examples.
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- Show with an example the difference between empirical and molecular fo...
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- Explain the significance of mole .
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