Question

name two other substances with giant covalent structures

Answer 1

Answer:

Diamond and graphite forms of carbon, silicon dioxide (silica)

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Answer 2

Answer:

Diamond and graphite forms of carbon) and silicon dioxide (silica) are examples of giant covalent structures (lattices) of atoms. All the atoms in these structures are linked to other atoms by strong covalent bonds and so they have very high melting points.