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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Formulae

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Formulae

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Paper 3Theory (Core)1 marks

Chemical formulas are essential in chemistry for identifying substances.

Description

Chemical Formulas

Chemical formulas indicate the composition of elements and compounds. For example, H2O represents water, while CO2 represents carbon dioxide.

  1. a

    State the chemical formula for carbon tetrachloride.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Formulae

Paper 3Theory (Core)1 marks

Description

Chemical Formulas

Chemical formulas provide information about the elements in a compound and their ratios. For example, NaCl indicates sodium and chlorine in a 1:1 ratio.

  1. a

    State the chemical formula for magnesium oxide.

    Aim for approximately 1 distinct marking point.

    [1]