mrs elliott

I hope that you have been all preparing for the test on Friday.  I have had a look over the first part of your tests and I think I will start by clearing up a common misconception.  Covalent lattices have some of the same properties as covalent molecules – except their melting point and hardness.  That is, they will not conduct electricity as a solid/liquid/in solution.

Also, please make sure that you read the question carefully.  Many of you are including information that is not required.  If the extra information that you have included is incorrect you will have marks deducted even though the information was not relevant.

I have created the following summary table for PRIMARY BONDING to help you with your revision.

Bonding

Structure

Properties

Metallic

(metals)

  • metal atoms arrange in lattice and achieve full valence shell by sharing delocalised electrons which move freely
  • the layers of atoms…

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