2.1 Covalent Network Compounds

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Presentation transcript:

2.1 Covalent Network Compounds 2.1.1. Silicon Carbide LO: I know the bonding and structure of silicon carbide.

Silicon carbide can be described as: a covalent . network The bonding extends throughout the structure a covalent . lattice There is a regular repeating pattern of atoms. The ratio of silicon to carbon atoms is 1:1 so the formula is . SiC LO: I know the bonding and structure of silicon carbide.

2.1.2. Silicon dioxide LO: I know the bonding and structure of silicon dioxide.

Silicon dioxide can also be described as: covalent network a . covalent lattice The ratio of silicon to oxygen atoms is so the formula is . 1:2 SiO2 LO: I know the bonding and structure of silicon dioxide.

2.1.3. Properties and Uses LO: I understand how the properties of covalent networks are related to their uses.

Silicon carbide and silicon dioxide have typical network properties: Very high . melting point Very . hard Very . unreactive linings Silicon carbide is used to make furnace , abrasive and cutting . paper disks sandpaper Silicon dioxide is used to make , building material ( ) and . stone glass LO: I understand how the properties of covalent networks are related to their uses.