Monday, 14 March 2016

Particles Overview

We then looked at two covalent network solids with very different properties: graphite and diamond.

A model of diamond showing the 3D lattice - 4 covalent bonds per carbon atom.
A model of graphite showing 2D sheets - 3 covalent bonds per carbon
atom with valence electrons between the sheets

Our next task was to explore a couple of the characteristic physical properties of these allotropes of carbons: hardness; and electrical conductivity. The trick is to link these properties to the particles and/or bonds/forces within the substance.

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