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/class-9-chemistry/x46dd29ce84a663ea:matter-in-our-surroundings/x46dd29ce84a663ea:states-of-matter/v/states-of-matter-in 2025-08-06T20:09:57.016070308Z States of matter (Bonus video) How many states of matter exist? How do they differ? Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw States of matter (Bonus video) How many states of matter exist? How do they differ? Let's find out! https://cdn.kastatic.org/ka-youtube-converted/QkiULYmCO3g.mp4/QkiULYmCO3g.mp4 735 States of matter https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:states-of-matter-and-phase-changes/e/understand-states-of-matter 2025-11-03T16:30:45.269938766Z Understand: states of matter Check your understanding of solids, liquids, and gases in this set of free, standards-aligned practice questions. Allen Ruch exercise 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