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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Simple molecules and covalent bonds

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Simple molecules and covalent bonds

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Paper 3Theory (Core)3 marks

Covalent bonding is a fundamental concept in chemistry.

Description

Covalent Bonding

Covalent bonds are formed when two non-metal atoms share pairs of electrons. This sharing allows each atom to attain a stable electronic configuration similar to that of noble gases.

  1. a

    Explain the process of covalent bonding and its significance in achieving stability.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 3 structured question: Simple molecules and covalent bonds

Paper 3Theory (Core)4 marks

Description

Covalent Bonds

Covalent bonds are formed between non-metal atoms through the sharing of electrons. This process results in the formation of molecules with specific properties.

  1. a

    Describe the characteristics of covalent bonds and provide examples of molecules formed by covalent bonding.

    Aim for approximately 4 distinct marking points.

    [4]