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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Ions and ionic bonds

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Ions and ionic bonds

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Paper 4Theory (Extended)4 marks

Understanding ionic bonds is essential for studying chemical compounds.

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Formation of Ionic Bonds

When sodium and chlorine react, sodium donates an electron to chlorine. This results in the formation of Na+ and Cl- ions, which are held together by ionic bonds.

  1. a

    Describe the process of ionic bond formation between sodium and chlorine.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 4 structured question: Ions and ionic bonds

Paper 4Theory (Extended)1 marks

Description

Ionic Bonding

Ionic bonds are formed when metals transfer electrons to non-metals, resulting in the formation of ions. For example, sodium (Na) loses an electron to become Na+, while chlorine (Cl) gains an electron to become Cl-.

  1. a

    State the charge of a sodium ion after it loses an electron.

    Aim for approximately 1 distinct marking point.

    [1]