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Chimie Générale Preparation (Dr. Chhour Monivan, PhD)

 

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1) In the Periodic Table, elements are assigned with atomic number based on?

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2) Which chemical element belong to halogen group?

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3) Which chemical element belong to alkali metal group?

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4) Empirical formula of hydrogen peroxide?

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5) Which chemical element belong to halogen group?

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6) Which chemical element belong to alkali metal group?

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7) Which subatomic particle has positive charge?

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8) Which subatomic particle has no charge?

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9) Which subatomic particle has negative charge?

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10) Which chemical element belong to alkali earth metal group?

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11) Which chemical element belong to halogen group?

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12) Which chemical element belong to alkali metal group?

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13) Which chemical element belong to halogen group?

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14) Which chemical element belong to alkali earth metal group?

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15) Molecular formula of phosphoric acid?

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16) Molecular formula of nitric acid?

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17) Molecular formula of sulfuric acid?

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18) Empirical formula of hydrazine?

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19) Glucose (C6H12O6), ribose (C5H10O5), Acetic acid (C2H4O2), and formaldehyde (CH2O) all have different molecular formulas but the same empirical formula. Write their empirical formula.?

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20) What are isotopes?

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