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 Indicators https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:solutions-acids-and-bases/x2613d8165d88df5e:intro-to-acids-and-bases/v/introduction-to-ph 2024-03-19T21:01:49.527176433Z Introduction to pH The pH scale is used to determine the acidity or basicity (alkalinity) of a substance. Acidic substances have pH values below 7, while basic substances have pH values above 7; neutral substances have a pH of 7. The pH scale is logarithmic, so each step represents a 10-fold change in concentration. Sal Khan video https://cdn.kastatic.org/googleusercontent/gH1DSPb-1zyfV6R9fjXld5DWVrmXbb1QVDaBRbvhapDJeuGGoBMuUBLYLYVUr1moO0mQnXTiJqy4oZGuifwVeio Introduction to pH The pH scale is used to determine the acidity or basicity (alkalinity) of a substance. Acidic substances have pH values below 7, while basic substances have pH values above 7; neutral substances have a pH of 7. The pH scale is logarithmic, so each step represents a 10-fold change in concentration. https://cdn.kastatic.org/ka-youtube-converted/oda2K4IFBaE.mp4/oda2K4IFBaE.mp4 322 Indicators https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:acids-bases-and-salts/x28e877d8a7566183:strength-of-acid-and-base/v/strength-of-solution-vs-concentration-acids-bases-and-salts-chemistry-khan-academy 2020-07-21T06:02:34Z Strength of solution vs concentration Strength of an acidic solution depends on the concentration of H+ ions in it. Ram Prakash video https://cdn.kastatic.org/googleusercontent/E8i5hq-4MrbIzec7v8mW27FEZstjVUbe73lCpILGcUypXjGmfUQxYzlMuVRO6ph-mfLHEd6JoBVYeymfrAeqkNuq Strength of solution vs concentration Strength of an acidic solution depends on the concentration of H+ ions in it. https://cdn.kastatic.org/ka-youtube-converted/0J4hLIYnAo0.mp4/0J4hLIYnAo0.mp4 551 Indicators