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Pearson Edexcel IAL Chemistry 3.1 Evidence for ions

Practise using conductivity, electron-density maps and ion-migration observations to justify the presence and movement of ions.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • explain conductivity changes by whether ions are fixed, molten or in aqueous solution
  • use electron-density maps or property tables to distinguish ionic from covalent bonding

3.1—Interpret evidence for the existence of ions question 1

[Maximum number: 2]

This question is about magnesium, magnesium oxide and magnesium sulfate.

The table gives some data about the electrical conductivity of magnesium and magnesium oxide.

Table for Question 3.1—Interpret evidence for the existence of ions question 1 — Edexcel A-Level Chemistry AS

Explain the similarities and differences in the electrical conductivity of the two substances.

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