https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-1/x37589313f9a4c197:acids-bases-and-salts/v/litmus-solution-natural-indicator-acids-bases-and-salts-chemistry-khan-academy 2020-07-21T06:02:27Z Litmus solution (Natural indicator) Litmus solution helps us identify solutions as acidic, basic, or neutral. Ram Prakash video https://cdn.kastatic.org/googleusercontent/Y0_d--oSSQ0I1596EcNndn_Nce5PKz0rASYylZQ2IVkm1KqjkuMP_OeQ6O8bjsfv9a5iIWUc-53mmi1XXWT8PSnR Litmus solution (Natural indicator) Litmus solution helps us identify solutions as acidic, basic, or neutral. https://cdn.kastatic.org/ka-youtube-converted/uwfSiFlqt10.mp4/uwfSiFlqt10.mp4 614 Natural indicators around us https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-1/x37589313f9a4c197:acids-bases-and-salts/e/litmus-test 2026-03-06T14:50:39.290513618Z Litmus test Let's practice problems involving testing whether a given substance is acidic or basic using litmus solution. Chaitra exercise https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:introduction-to-acid-and-base/x0f256b8de9c7cf34:indicators/v/turmeric-and-red-rose-as-indicators 2025-05-23T19:37:06.54837869Z Turmeric and Red Rose as Indicators Did you know that turmeric and red rose petals can help identify whether a substance is an acid or a base? In this video, we explore how these everyday materials act as natural acid-base indicators. We’ll walk you through how to prepare these indicators at home and understand their reactions in a fun, hands-on way. Bitasta Datta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Turmeric and Red Rose as Indicators Did you know that turmeric and red rose petals can help identify whether a substance is an acid or a base? In this video, we explore how these everyday materials act as natural acid-base indicators. We’ll walk you through how to prepare these indicators at home and understand their reactions in a fun, hands-on way. https://cdn.kastatic.org/ka-youtube-converted/PmjT6Z_Cz5c.mp4/PmjT6Z_Cz5c.mp4 257 Natural indicators around us https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:introduction-to-acid-and-base/x0f256b8de9c7cf34:indicators/e/red-rose-and-turmeric-as-indicators 2026-04-09T13:10:38.304888012Z Red Rose and Turmeric as Indicators From kitchen spice to garden petals—explore how everyday things like turmeric and red roses reveal the hidden nature of substances! Bitasta Datta exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:other-atmospheric-pollution/v/acid-rain 2024-06-21T23:15:14.703721694Z Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/d9f874cf-1450-41c3-87f7-273d42f816f3_1280_720_base.png Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. https://cdn.kastatic.org/ka-youtube-converted/P4I-abHPa-I.mp4/P4I-abHPa-I.mp4 461 Natural indicators around us