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Edexcel A-Level Chemistry AS 3.15 Distinguish Between Polar Bonds and Polar Molecules and Predict Whether or Not a Given Molecule Is Likely to Be Polar Questions

Practise using electronegativity differences, dipoles and molecular symmetry to distinguish polar bonds, polar molecules and ionic or covalent character with Edexcel IAL Chemistry evidence.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Use electronegativity data to compare ionic and covalent character in chlorides.
  • Explain bond polarity by assigning δ+ and δ− from the more electronegative atom.
  • Interpret dipole or electron-density diagrams for polar covalent bonds.

Edexcel A-Level Chemistry AS 3.15 Distinguish Between Polar Bonds and Polar Molecules and Predict Whether or Not a Given Molecule Is Likely to Be Polar Questions question 1

[Maximum number: 3]

This question is about alkenes.

Another compound, Y, has the structure shown.

Figure for Question Edexcel A-Level Chemistry AS 3.15 Distinguish Between Polar Bonds and Polar Molecules and Predict Whether or Not a Given Molecule Is Likely to Be Polar Questions question 1 — Edexcel A-Level Chemistry AS

A student stated that
‘Compound Y has polar bonds so it is a polar molecule’.
Comment on this statement.

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