https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:mixtures-and-solution/v/concentration-of-a-solution 2023-06-26T12:36:08.867767149Z Concentration of a solution How can we describe the differences between these two mixtures: One with 1 teaspoon of salt in water and other with 4 teaspoons of salt in water. Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Concentration of a solution How can we describe the differences between these two mixtures: One with 1 teaspoon of salt in water and other with 4 teaspoons of salt in water. Let's find out! https://cdn.kastatic.org/ka-youtube-converted/gtTJMNdY87A.mp4/gtTJMNdY87A.mp4 313 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:mixtures-and-solution/e/concentration-of-a-solution 2025-02-06T05:32:11.208946943Z Concentration of a solution Let's solve a few problems to calculate the concentration of a given solution. Aanchal Arora exercise https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:solutions-suspensions-and-colloids/v/scattering-of-light-tyndall-effect 2020-12-29T16:19:57Z Scattering of light & Tyndall effect Let's explore the scattering of light with the help of an experiment. When we shine a laser through a glass of water with few drops of milk, we can see the path of light. This effect is often called the Tyndall effect.  Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/u58_VbsEYsBGIc6NKV0EcOpyFTvqmlK_0Bcc5izrVlBgCDiRLqSLBuzFqIz0TfYSx_9VGhUinbnm0sIxTQyvM-KD Scattering of light & Tyndall effect Let's explore the scattering of light with the help of an experiment. When we shine a laser through a glass of water with few drops of milk, we can see the path of light. This effect is often called the Tyndall effect.  https://cdn.kastatic.org/ka-youtube-converted/OXoKZPLb6Qo.mp4/OXoKZPLb6Qo.mp4 625 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:solutions-suspensions-and-colloids/e/differentiating-solution-suspension-and-colloids 2026-04-07T09:22:30.618598699Z Differentiating Solution, Suspension and Colloids. Let's solve a few problems to differentiate between a solution, a suspension and a colloid. Aanchal Arora exercise https://www.khanacademy.org/science/up-science-grade-6-revision-course-full-term/x017c12e57b64cfa8:week-1/x017c12e57b64cfa8:untitled-210/v/in-vaporisation 2023-06-26T03:56:33.129173029Z Vaporisation How can we separate dissolved salt from water? Let's find out!  Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Vaporisation How can we separate dissolved salt from water? Let's find out!  https://cdn.kastatic.org/ka-youtube-converted/iqR4KWWZRSo.mp4/iqR4KWWZRSo.mp4 103 Is Matter around us Pure? https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-3/x00110b31861f2508:methods-of-separation-in-everyday-life/v/filtration 2023-06-26T03:56:33.129173029Z Filtration How can we separate water and tiny insoluble particles in it? Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Filtration How can we separate water and tiny insoluble particles in it? https://cdn.kastatic.org/ka-youtube-converted/rv6h2tw8-2M.mp4/rv6h2tw8-2M.mp4 212 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:methods-to-separate-the-components-of-a-mixture/v/simple-and-fractional-distillations 2020-06-23T07:22:40Z Simple and fractional distillations Learn how chemicals can be separated and purified through distillation, a process which separates them based on their respective boiling points. By Angela Guerrero. Angela Guerrero video https://cdn.kastatic.org/googleusercontent/k5V4BDgdD21kDfLcDnc2xY7r7Jx29TAko7autiw2VzVbtZirvyhcRO4jN0av4KbeRm2Q3MDUY1fd4a5NGdsFhLRbGw Simple and fractional distillations Learn how chemicals can be separated and purified through distillation, a process which separates them based on their respective boiling points. By Angela Guerrero. https://cdn.kastatic.org/ka-youtube-converted/3pL2X-8-eVk.mp4/3pL2X-8-eVk.mp4 570 Is Matter around us Pure? https://www.khanacademy.org/science/up-science-grade-6-revision-course-full-term/x017c12e57b64cfa8:week-1/x017c12e57b64cfa8:untitled-210/v/sublimation 2023-06-26T03:56:33.129173029Z Sublimation How can we separate two solids from each other? Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Sublimation How can we separate two solids from each other? https://cdn.kastatic.org/ka-youtube-converted/c7EuQrvXtDU.mp4/c7EuQrvXtDU.mp4 212 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:methods-to-separate-the-components-of-a-mixture/v/basics-of-chromatography 2020-06-23T07:22:41Z Basics of chromatography Understand the basic principles of different kinds of chromatography: paper, thin layer, column, size-exclusion, ion exchange, affinity, and HPLC. Angela Guerrero video https://cdn.kastatic.org/googleusercontent/89HB_p_jfEzP8gF9BpTsK4yZXlM_imxL1b-XWdPJI3KRC8VECuFeJUPMxoHke6RxPxUkfINzhUEdrmRCqJB_x7bt Basics of chromatography Understand the basic principles of different kinds of chromatography: paper, thin layer, column, size-exclusion, ion exchange, affinity, and HPLC. https://cdn.kastatic.org/ka-youtube-converted/SnbXQTTHGs4.mp4/SnbXQTTHGs4.mp4 556 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:methods-to-separate-the-components-of-a-mixture/v/crystallisation 2023-06-26T12:36:08.867767149Z Crystallisation How can we separate salt from water without heating? Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Crystallisation How can we separate salt from water without heating? Let's find out! https://cdn.kastatic.org/ka-youtube-converted/hBpmLf-8G2A.mp4/hBpmLf-8G2A.mp4 188 Is Matter around us Pure? https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:is-matter-around-us-pure/x46dd29ce84a663ea:methods-to-separate-the-components-of-a-mixture/e/methods-to-separate-the-compounds-of-a-mixture 2026-04-03T18:30:01.793877038Z Methods to separate the compounds of a mixture. Let's solve a few problems to identify the methods to separate the compounds of a mixture. Aanchal Arora exercise