https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:solids-liquids-and-gases/v/representing-solids-liquids-and-gases-using-particulate-models 2022-10-05T02:43:18.611402953Z Representing solids, liquids, and gases using particulate models In this video, we'll learn how to represent solids, liquids, and gases using particulate models. The particles in a solid are either highly ordered (if the solid is crystalline) or have no regular arrangement (if the solid is amorphous). In both cases, the motion of the particles is limited. The particles in a liquid are close together and are constantly moving and colliding. Finally, the particles in a gas are generally well-separated and are in constant, random motion. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/4afb6fa0-d848-4ae6-8e3f-41ea2c33569a_1280_720_base.png Representing solids, liquids, and gases using particulate models In this video, we'll learn how to represent solids, liquids, and gases using particulate models. The particles in a solid are either highly ordered (if the solid is crystalline) or have no regular arrangement (if the solid is amorphous). In both cases, the motion of the particles is limited. The particles in a liquid are close together and are constantly moving and colliding. Finally, the particles in a gas are generally well-separated and are in constant, random motion. https://cdn.kastatic.org/ka-youtube-converted/4Q45iIeMdCM.mp4/4Q45iIeMdCM.mp4 291 Particle model of matter https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinetic-particle-model-of-matter/x0e04e0cb682fb793:particle-model-of-matter/e/interparticle-forces-of-attraction-in-solids-liquids-and-gases 2026-04-20T07:20:46.893989224Z Interparticle forces of attraction in Solids, Liquids and Gases This Class 8 Science exercise on Interparticle Forces of Attraction explains why solids are rigid, liquids flow, and gases expand freely. With MCQs, dropdowns, and image-based questions linked to textbook experiments and daily life, it builds clear understanding step by step. Yajurva Joshi exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinetic-particle-model-of-matter/x0e04e0cb682fb793:particle-model-of-matter/v/characteristics-of-particles-of-matter-ur 2025-08-07T23:35:51.501752344Z Characteristics of particles of matter Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Characteristics of particles of matter Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/N56mq4it4JI.mp4/N56mq4it4JI.mp4 328 Particle model of matter https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinetic-particle-model-of-matter/x0e04e0cb682fb793:particle-model-of-matter/e/characteristics-of-particles-of-matter 2026-04-03T18:30:01.793877038Z Characteristics of particles of matter Let's solve some questions! Vibhor Pandey exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinetic-particle-model-of-matter/x0e04e0cb682fb793:particle-model-of-matter/v/effect-of-temp-and-pressure-on-state-change-pk 2025-12-18T00:30:56.558401705Z Effect of temp and pressure on state change Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Effect of temp and pressure on state change Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/m3IxzzbHcIc.mp4/m3IxzzbHcIc.mp4 321 Particle model of matter