https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:states-of-matter/v/digging-deeper-into-gases 2025-03-06T03:23:19.512752417Z Digging Deeper into Gases Ever wondered why the smell of food spreads across a room? Or how a balloon stays inflated? Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Digging Deeper into Gases Ever wondered why the smell of food spreads across a room? Or how a balloon stays inflated? https://cdn.kastatic.org/ka-youtube-converted/HVrlxEkUiuA.mp4/HVrlxEkUiuA.mp4 336 Structure of Nature and Matter https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:states-of-matter/v/why-water-vapor-exists-without-boiling-evaporation-vs-boiling 2025-01-14T13:46:46.197485586Z Why Water Vapor Exists Without Boiling: Evaporation vs Boiling Discover the fascinating differences between evaporation and boiling in this video! Learn how evaporation happens at the surface of water at any temperature, while boiling is a bulk process occurring at 100°C. We’ll also clarify the distinction between water vapor and steam—terms often used interchangeably but with important differences. Explore relatable examples like drying clothes, spilled water disappearing, and even how your hair dries after a bath. Dive into the science behind these everyday phenomena. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Why Water Vapor Exists Without Boiling: Evaporation vs Boiling Discover the fascinating differences between evaporation and boiling in this video! Learn how evaporation happens at the surface of water at any temperature, while boiling is a bulk process occurring at 100°C. We’ll also clarify the distinction between water vapor and steam—terms often used interchangeably but with important differences. Explore relatable examples like drying clothes, spilled water disappearing, and even how your hair dries after a bath. Dive into the science behind these everyday phenomena. https://cdn.kastatic.org/ka-youtube-converted/-R411S98xX4.mp4/-R411S98xX4.mp4 396 Structure of Nature and Matter https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-3/x00110b31861f2508:a-journey-through-states-of-water/e/interconversion-of-states-of-matter 2026-04-08T00:16:02.937952483Z Interconversion of states of matter Lets answer some questions. Shankar R exercise https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:matter-in-our-surroundings/x46dd29ce84a663ea:states-of-matter/v/effect-of-temp-and-pressure-on-state-change 2023-06-26T12:36:08.867767149Z Effect of temp and pressure on state change Can matter change its state upon changing the temperature and pressure? Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Effect of temp and pressure on state change Can matter change its state upon changing the temperature and pressure? Let's find out! https://cdn.kastatic.org/ka-youtube-converted/gx0vGzZfuOQ.mp4/gx0vGzZfuOQ.mp4 321 Structure of Nature and Matter https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:classifying-matter/xc370bc422b7f75fc:compounds/v/compounds-and-chemical-formulas 2025-01-16T17:32:17.772857468Z Compounds and chemical formulas Some substances, like copper or gold, are pure elements. Others, like water (H₂O), are compounds—made from two or more elements in fixed ratios, chemically bonded. Each compound has a unique formula, like CO₂ for carbon dioxide, representing its specific atomic arrangement. Compounds form molecules, tightly bonded units, creating an incredible diversity of substances in nature. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/e3e4181e-5236-462c-82b7-64099d59b95c_1280_720_base.png Compounds and chemical formulas Some substances, like copper or gold, are pure elements. Others, like water (H₂O), are compounds—made from two or more elements in fixed ratios, chemically bonded. Each compound has a unique formula, like CO₂ for carbon dioxide, representing its specific atomic arrangement. Compounds form molecules, tightly bonded units, creating an incredible diversity of substances in nature. https://cdn.kastatic.org/ka-youtube-converted/36nlbUdRvUM.mp4/36nlbUdRvUM.mp4 361 Structure of Nature and Matter https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:elements-compounds-and-symbols-of-elements/e/symbols-and-molecular-formula-of-elements 2026-04-08T00:36:09.500768563Z Symbols and Chemical formula of elements and compounds Let's identify symbols and write molecular formula of elements Vibhor Pandey exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:elements-compounds-and-symbols-of-elements/e/compounds-and-chemical-formulas 2026-04-08T00:16:02.937952483Z Compounds and Chemical formulas Lets answer some questions! Shankar R exercise