https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:states-of-matter-and-phase-changes/v/states-of-matter-ms 2025-02-13T17:59:34.347326855Z States of matter Matter exists in three main states: solids, liquids, and gases, each with unique particle arrangements and behaviors. Particles range from being tightly packed, with a definite shape and volume, to moving freely, with no fixed shape or volume. Understanding these states of matter helps us see why solids are rigid, liquids flow, and gases expand to fill spaces. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/cb816a21-25af-4ceb-9bcd-1a5bf80fc572_1280_720_base.png States of matter Matter exists in three main states: solids, liquids, and gases, each with unique particle arrangements and behaviors. Particles range from being tightly packed, with a definite shape and volume, to moving freely, with no fixed shape or volume. Understanding these states of matter helps us see why solids are rigid, liquids flow, and gases expand to fill spaces. https://cdn.kastatic.org/ka-youtube-converted/gBiF-OLUVTY.mp4/gBiF-OLUVTY.mp4 269 States of matter https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:states-of-matter-and-phase-changes/v/phase-changes 2025-02-13T17:59:34.347326855Z Phase changes Phase changes are physical changes in which a substance shifts from one state of matter to another, like ice melting into water or water boiling into steam. These transformations depend on two factors: particle attractions and kinetic energy. Heating a substance increases particle motion, potentially overcoming attractions to change phases. Each substance has unique melting, freezing, and boiling points due to these forces. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/caa39295-8825-4f0c-8086-c97aa37e714f_1280_720_base.png Phase changes Phase changes are physical changes in which a substance shifts from one state of matter to another, like ice melting into water or water boiling into steam. These transformations depend on two factors: particle attractions and kinetic energy. Heating a substance increases particle motion, potentially overcoming attractions to change phases. Each substance has unique melting, freezing, and boiling points due to these forces. https://cdn.kastatic.org/ka-youtube-converted/Aeddl02frBE.mp4/Aeddl02frBE.mp4 458 States of matter 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 States of matter https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:structure-of-nature-and-matter/x0c8b40bd4b242f0b:states-of-matter/e/states-of-matter 2026-04-07T23:55:07.30621384Z States of matter Lets answer some questions on states of matter Shankar R exercise https://www.khanacademy.org/science/grade-6-science-snc-aligned/x19bc096754f0b9af:matter-as-particles/x19bc096754f0b9af:particle-theory-and-states-of-matter/e/differentiate-between-solids-liquids-and-gases 2026-04-07T22:23:57.656416987Z Differentiate between solids, liquids and gases. Classification of things around us on the basis of physical properties into solids, liquids and gases. Revathi exercise 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