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Giant Covalent (graphite (atoms form layers, softer than diamond, layers…
Giant Covalent
graphite
atoms form layers
softer than diamond
layers slide over each other
each atom has three covalent bonds
free electrons-conduct electricity
silica
found in sand
similar structure to diamond
hard
high melting points
semi-conductor
diamond
each atom has four covalent bonds
hard
high melting points
do not conduct electricity
non-metal atoms
variable conductivity
atoms joined together by covalent bonds
arranged in giant regular lattice
very high melting points