Criado por watsonmatthew
mais de 10 anos atrás
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A Covalent bond are 2 non metals (Same or different) that share electrons
A covalent compound has a low melting/boiling point and will NOT conduct electricity, this is because there are no ions or de-localised (free) electrons
These are some examples of covalent bonds shown in a cross and dot model (The cross and dots represent different elements)
Something becomes a covalent bond when it SHARES a bond that is linked by and electron
These are examples of a giant molecular compound
DIAMOND
GRAPHITE
SILICA
Most of these giant molecular compounds are arranged into a giant regular lattice structure
Giant molecular compounds
Giant molecular compounds are:- Very conductive- Have very high melting points
GRAPHITE: Weak bonds, break easily, carbon atoms form layers that slim over each other easily, conducts well
DIAMOND: Very strong carbon bonds, extermly hard to break (virtually impossible) does not conduct
SILICA: Similar to diamond, it has a very high melting point, and is very hard to break, contains silicon and oxygen atoms instead of carbon
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