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Edexcel A-Level Chemistry AS 3.1 Interpret Evidence for the Existence of Ions Questions

Practise explaining conductivity in solids, melts and solutions, interpreting ion migration and electron-density maps as evidence of ionic bonding using Edexcel IAL Chemistry questions.

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.
  • Interpret ion migration toward electrodes as evidence of mobile cations and anions.

Edexcel A-Level Chemistry AS 3.1 Interpret Evidence for the Existence of Ions Questions 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 Edexcel A-Level Chemistry AS 3.1 Interpret Evidence for the Existence of Ions Questions question 1 — Edexcel A-Level Chemistry AS

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

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