Covalent network solids | Intermolecular forces and properties | AP Chemistry | Khan Academy
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https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:properties-of-solids/e/properties-of-solids
Covalent network solids are composed of atoms covalently bonded together into a three-dimensional network or layers of two-dimensional networks. Due to the strength of the covalent bonds, covalent network solids tend to have high melting points. Three-dimensional network solids (such as diamond or silica) are typically hard and rigid, whereas two-dimensional network solids (such as graphite) are much softer due to the ease with which the network layers can slide past each other. View more lessons or practice this subject at https://www.khanacademy.org/science/chemistry/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:properties-of-solids/v/covalent-network-solids
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