https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:atoms-elements-and-compounds/x8bc8fb44369617ed:giant-covalent-structures/v/graphite-carbon 2026-04-29T07:20:45.495372596Z Graphite Carbon Graphite Carbon Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Graphite Carbon Graphite Carbon https://cdn.kastatic.org/ka-youtube-converted/wMWlWhzg1Z0.mp4/wMWlWhzg1Z0.mp4 407 Giant covalent structures https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:properties-of-solids/v/covalent-network-solids 2021-03-23T22:19:10Z Covalent network 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 have high melting points. Three-dimensional network solids (such as diamond or silica) are hard and rigid, whereas two-dimensional network solids (such as graphite) are soft due to the ease with which the network layers can slide past each other. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Covalent network 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 have high melting points. Three-dimensional network solids (such as diamond or silica) are hard and rigid, whereas two-dimensional network solids (such as graphite) are soft due to the ease with which the network layers can slide past each other. https://cdn.kastatic.org/ka-youtube-converted/le-ttBDN_FM.mp4/le-ttBDN_FM.mp4 244 Giant covalent structures https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:atoms-elements-and-compounds/x8bc8fb44369617ed:giant-covalent-structures/v/silicon-based-life 2021-03-18T10:33:22Z Silicon-based life Could silicon play a role similar to carbon's in supporting life? video https://cdn.kastatic.org/googleusercontent/qyYOG8rVnAmKhqCqHqTL8gcFvE6-DJtqdBb08N-iojrwygSOw8e5WdXm3VApuD0jfLr-0zN9azQsC93pQPG4Vdlm Silicon-based life Could silicon play a role similar to carbon's in supporting life? https://cdn.kastatic.org/ka-youtube-converted/FbP9nUrtKto.mp4/FbP9nUrtKto.mp4 393 Giant covalent structures https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-2/x37589313f9a4c197:organic-and-inorganic-compounds/e/allotropes-of-carbon 2026-04-21T09:50:34.424034119Z Allotropes of Carbon Let's solve some problems to better understand the allotropes of Carbon Aakash Bagga exercise https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:atoms-elements-and-compounds/x8bc8fb44369617ed:giant-covalent-structures/e/allotropes-of-carbonin 2026-03-19T04:06:43.048727621Z Allotropes of carbon To analyze the properties of different carbon allotropes and apply this knowledge to identify their suitable uses. Swarnendu Koner exercise