https://www.khanacademy.org/science/biology/membranes-and-transport/diffusion-and-osmosis/v/diffusion-video 2023-09-14T11:22:40.102153098Z Diffusion - Introduction Diffusion occurs when particles move from an area of high concentration to low concentration, creating a concentration gradient. This natural, energy-free process occurs due to the random movement of particles, with a higher chance of particles moving from the high concentration side. Over time, this leads to an equilibrium state with equal concentrations on both sides. Sal Khan video https://cdn.kastatic.org/googleusercontent/RUQQq8sEkvIHMaAACUfO9mwKcYl24deX2nahzhdiPcW8Hu02regQ_phJzKBOoUg3VABgzF1J8ziAQfdkVITX558 Diffusion - Introduction Diffusion occurs when particles move from an area of high concentration to low concentration, creating a concentration gradient. This natural, energy-free process occurs due to the random movement of particles, with a higher chance of particles moving from the high concentration side. Over time, this leads to an equilibrium state with equal concentrations on both sides. https://cdn.kastatic.org/ka-youtube-converted/a_Y9wBQ610o.mp4/a_Y9wBQ610o.mp4 367 Properties of liquids https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/states-of-matter/v/vapor-pressure 2021-04-15T14:55:08Z Vapor pressure Vapor pressure, volatility, and evaporation. Sal Khan video https://cdn.kastatic.org/googleusercontent/Xcbhi-CrgDtzILJGS9TkjTMm1EaGOML8HEtPWXZhToZHdXty6novP08OFMg6HYn7_6pCWYpP45aF9mXm91LfrSjS Vapor pressure Vapor pressure, volatility, and evaporation. https://cdn.kastatic.org/ka-youtube-converted/hA5jddDYcyg.mp4/hA5jddDYcyg.mp4 1084 Properties of liquids https://www.khanacademy.org/science/ap-biology/chemistry-of-life/structure-of-water-and-hydrogen-bonding/v/capillary-action-and-why-we-see-a-meniscus 2025-07-30T13:17:28.990785461Z Capillary action and why we see a meniscus A meniscus is a curved liquid surface that results from the interplay of adhesion (the liquid's attraction to its container) and cohesion (the liquid's attraction to itself). Adhesion also drives capillary action, which draws a liquid up a narrow tube. video https://cdn.kastatic.org/googleusercontent/GcYBBVjS_-p2iwyhKPbdGPS8FjspWai1o5ZToJZyUTsr3rv9vCE2ScIgURtcq6S_AgKVrlrKd1HRs84b-Kx-MvtTtw Capillary action and why we see a meniscus A meniscus is a curved liquid surface that results from the interplay of adhesion (the liquid's attraction to its container) and cohesion (the liquid's attraction to itself). Adhesion also drives capillary action, which draws a liquid up a narrow tube. https://cdn.kastatic.org/ka-youtube-converted/eQXGpturk3A.mp4/eQXGpturk3A.mp4 506 Properties of liquids https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:liquids-solids-and-gases/v/intermolecular-forces-and-vapor-pressure 2022-10-05T02:43:18.611402953Z Intermolecular forces and vapor pressure A liquid’s vapor pressure is directly related to the intermolecular forces present between its molecules. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/4e715fb9-b309-4109-8ea4-83576fc8ce0b_1280_720_base.png Intermolecular forces and vapor pressure A liquid’s vapor pressure is directly related to the intermolecular forces present between its molecules. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure. https://cdn.kastatic.org/ka-youtube-converted/eubN8DwUh48.mp4/eubN8DwUh48.mp4 364 Properties of liquids https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:states-of-matter/x2613d8165d88df5e:liquids-solids-and-gases/e/apply-properties-of-liquids 2026-04-08T00:54:09.631945657Z Apply: properties of liquids Apply your understanding of intermolecular forces to predict macroscopic properties in liquids in this set of free practice questions. Donna Fig exercise