Topic 2. IonicSimple (covalent) Giant (covalent) Metallic Melting point  Boiling point  Electrical/ heat conductor Yes, when molten or in solution.

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Presentation transcript:

Topic 2

IonicSimple (covalent) Giant (covalent) Metallic Melting point  Boiling point  Electrical/ heat conductor Yes, when molten or in solution (aq) as allows ions to move No, due to no overall charge No – diamond Yes – graphite due to delocalised electrons Yes, due to delocalised electrons Strong electrostatic forces Strong covalent bonds, weak intermolecular forces Strong covalent bonds

Layers of graphite slip off and leave a mark on paper The free e - from each C atom can move in between the layers, making graphite a good conductor of electricity

Pure metals are made up of layers of one type of atoms These slide easily over one another and therefore metals can be bent and shaped

Structures are: nm in size or a few hundred atoms Show different properties to same materials in bulk Have high surface area to volume ratio

Titanium oxide on windows Titanium oxide reacts with sunshine, which breaks down dirt Silver and socks Silver nanoparticles in socks can prevent the fabric from smelling