https://www.khanacademy.org/science/shs-physical-science/x0492729e402f0c6b:unit-1-name/x0492729e402f0c6b:intermolecular-forces-of-attraction/a/intramolecular-and-intermolecular-forces 2021-04-29T08:00:41Z Intramolecular and intermolecular forces article https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:electronegativity-and-bond-polarity/e/understand-electronegativity-and-bond-polarity 2024-05-10T15:32:29.295801235Z Understand: electronegativity and bond polarity Check your understanding of electron structure and bonding patterns in this set of free practice questions. donna fig exercise https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:intermolecular-forces/v/london-dispersion-forces 2022-09-05T08:18:59.810508578Z London dispersion forces London dispersion forces result from the coulombic interactions between instantaneous dipoles. Dispersion forces are present between all molecules (and atoms) and are typically greater for heavier, more polarizable molecules and molecules with larger surface areas. Sal Khan video https://cdn.kastatic.org/googleusercontent/9W7nf8Da5UEkN1LnNg4A62u_Z_W-T-LA_sxbw9oNjaIr626_bZwB5HiUVJSVOpTiINik1n_HkACLxW8LpLraCDwX London dispersion forces London dispersion forces result from the coulombic interactions between instantaneous dipoles. Dispersion forces are present between all molecules (and atoms) and are typically greater for heavier, more polarizable molecules and molecules with larger surface areas. https://cdn.kastatic.org/ka-youtube-converted/5OT5l-NZS24.mp4/5OT5l-NZS24.mp4 578 Intermolecular forces https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:intermolecular-forces/v/dipole-dipole-forces 2023-12-18T19:15:22.874322042Z Dipole–dipole forces Dipole-dipole forces occur between molecules with permanent dipoles (i.e., polar molecules). For molecules of similar size and mass, the strength of these forces increases with increasing polarity. Polar molecules can also induce dipoles in nonpolar molecules, resulting in dipole–induced dipole forces. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/878a6e05-eb55-42e7-9244-49264d420a89_1280_720_base.png Dipole–dipole forces Dipole-dipole forces occur between molecules with permanent dipoles (i.e., polar molecules). For molecules of similar size and mass, the strength of these forces increases with increasing polarity. Polar molecules can also induce dipoles in nonpolar molecules, resulting in dipole–induced dipole forces. https://cdn.kastatic.org/ka-youtube-converted/hg7jN32q9A0.mp4/hg7jN32q9A0.mp4 406 Intermolecular forces https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:intermolecular-forces/v/hydrogen-bonding 2022-09-05T08:18:59.810508578Z Hydrogen bonding Hydrogen bonding is a special type of dipole-dipole interaction that occurs between the lone pair of a highly electronegative atom (typically N, O, or F) and the hydrogen atom in a N–H, O–H, or F–H bond. Hydrogen bonds can form between different molecules (intermolecular hydrogen bonding) or between different parts of the same molecule (intramolecular hydrogen bonding). Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/cc7f3705-0765-4450-91db-3a33e7d96b13_1280_720_base.png Hydrogen bonding Hydrogen bonding is a special type of dipole-dipole interaction that occurs between the lone pair of a highly electronegative atom (typically N, O, or F) and the hydrogen atom in a N–H, O–H, or F–H bond. Hydrogen bonds can form between different molecules (intermolecular hydrogen bonding) or between different parts of the same molecule (intramolecular hydrogen bonding). https://cdn.kastatic.org/ka-youtube-converted/ltxqQbiI6-o.mp4/ltxqQbiI6-o.mp4 399 Intermolecular forces https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:intermolecular-forces/e/intermolecular-forces 2023-08-07T17:25:22.494770007Z Intermolecular forces Check your understanding of intermolecular forces in this set of free practice questions designed for AP Chemistry students. Lauren Rosebrugh exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:intermolecular-forces/e/understand-intermolecular-forces 2024-04-24T00:11:47.245376853Z Understand: intermolecular forces Check your understanding of molecular structure to predict macroscopic properties in this set of free practice questions. donna fig exercise https://www.khanacademy.org/science/ap-biology/chemistry-of-life/structure-of-water-and-hydrogen-bonding/v/hydrogen-bonding-in-water 2024-05-06T19:22:43.24334365Z Hydrogen bonding in water Water is made up of two hydrogens and one oxygen atom, arranged in a tetrahedral shape. Oxygen is highly electronegative, which creates a partial negative charge on one end of the molecule, and a partial positive charge on the other. So, water molecules are able to form hydrogen bonds with one another, giving water many of its unique properties. Sal Khan video https://cdn.kastatic.org/googleusercontent/v6flhLpSALrboiHbmgvmHe2pwc8py225cKGtpBk2LtKGtkCVD2ONNWLrW-dI5ea-schvnK1ElyQtOJInviOo1AGU Hydrogen bonding in water Water is made up of two hydrogens and one oxygen atom, arranged in a tetrahedral shape. Oxygen is highly electronegative, which creates a partial negative charge on one end of the molecule, and a partial positive charge on the other. So, water molecules are able to form hydrogen bonds with one another, giving water many of its unique properties. https://cdn.kastatic.org/ka-youtube-converted/6G1evL7ELwE.mp4/6G1evL7ELwE.mp4 407 Intermolecular forces https://www.khanacademy.org/science/grade-11-chemistry-snc-aligned/x203b0fc81a964b2d:chemical-bonding/x203b0fc81a964b2d:intermolecular-forces/e/water-and-hydrogen-bonding 2021-04-29T07:54:02Z Water and hydrogen bonding Test your knowledge on water and hydrogen bonding! Ashley exercise https://www.khanacademy.org/science/ap-biology/chemistry-of-life/structure-of-water-and-hydrogen-bonding/a/hydrogen-bonding-in-water 2023-11-17T19:19:16.015325494Z Hydrogen bonds in water The structure of water molecules and how they can interact to form hydrogen bonds. article https://www.khanacademy.org/science/grade-11-chemistry-snc-aligned/x203b0fc81a964b2d:chemical-bonding/x203b0fc81a964b2d:intermolecular-forces/v/anomalous-expansion-of-water-pk 2025-12-18T00:30:56.558401705Z Anomalous expansion of water Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Anomalous expansion of water Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/dFmmeqwvmrg.mp4/dFmmeqwvmrg.mp4 605 Intermolecular forces https://www.khanacademy.org/science/in-in-class11th-physics/in-in-thermal-properties-of-matter/in-in-thermal-expansion-in-fluids/e/anomalous-expansion-of-water 2026-04-08T01:15:04.085520103Z Anomalous expansion of water Let's solve some problems to better understand the anomalous behavior of water when it expands. Aakash Bagga exercise