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Edexcel IGCSE Chemistry 1.43 Ionic conductivity

Practise deciding when ionic substances conduct electricity by tracking whether ions are fixed in a solid or mobile when molten or aqueous.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • explain why solid ionic compounds do not conduct, using fixed ions and no mobile electrons
  • predict conductivity for molten or aqueous ionic substances from mobile ions
  • describe melting or dissolving an ionic solid as a way to make it conduct electricity

1.43 Ionic conductivity question 1

[Maximum number: 5]

This question is about Group 2 elements and their compounds.

The table lists some substances and shows which substance conducts electricity.

Table for Question 1.43 Ionic conductivity question 1 — Edexcel IGCSE Chemistry

Explain these observations.
Refer to structure and bonding in your answer.

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