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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Arrangement of elements

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Arrangement of elements

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Paper 3Theory (Core)2 marks

Consider the following elements: Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine.

Data Table

Element Properties

The table lists elements with their properties as you move across a period.

ElementTypeConductivity
SodiumMetalGood
MagnesiumMetalGood
AluminumMetalGood
SiliconMetalloidSemi-conductive
PhosphorusNon-metalPoor
SulfurNon-metalPoor
ChlorineNon-metalPoor
  1. a

    Analyse the trend in conductivity as you move from Sodium to Chlorine.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Arrangement of elements

Paper 3Theory (Core)3 marks

Description

Properties of Elements Across a Period

As you move from left to right across a period, elements transition from metals to non-metals. Metals are typically good conductors, while non-metals are poor conductors and can be gases, liquids, or brittle solids.

  1. a

    Explain the transition of properties from metallic to non-metallic as you move across a period.

    Aim for approximately 3 distinct marking points.

    [3]