https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/v/common-simple-redox-reaction 2026-04-29T07:20:45.495372596Z Common simple redox reaction Simple redox reaction Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Common simple redox reaction Simple redox reaction https://cdn.kastatic.org/ka-youtube-converted/LkdNk6aOlA0.mp4/LkdNk6aOlA0.mp4 418 Redox reactions https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/v/oxidation-and-reduction-conventional-definition-pk 2025-12-18T18:40:53.641757593Z Oxidation and reduction (Conventional definition) Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Oxidation and reduction (Conventional definition) Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/RfNvalXjQx4.mp4/RfNvalXjQx4.mp4 609 Redox reactions https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/introduction-to-oxidation-and-reduction 2021-01-04T18:35:19Z Oxidation and reduction Introducing oxidation states, oxidation, and reduction. Some tips for remembering oxidation and reduction.  Sal Khan video https://cdn.kastatic.org/googleusercontent/mh5GOQqJkJQnDwGJkQVbTV9oL_BswdUL3gYs3sX0VjgftqZQTqnw5bFHOlSpVtRPuIdgtt7NlZ69E6dM0pVydClT Oxidation and reduction Introducing oxidation states, oxidation, and reduction. Some tips for remembering oxidation and reduction.  https://cdn.kastatic.org/ka-youtube-converted/DvYs1HILq1g.mp4/DvYs1HILq1g.mp4 664 Redox reactions https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/oxidation-state-trends-in-periodic-table 2021-07-14T12:44:35Z Oxidation state trends in periodic table Trends in common oxidation states for main group elements.  Sal Khan video https://cdn.kastatic.org/googleusercontent/FXNvIT-oUYqJYJ0lTFelsKN6m2VTKptYh5etbJv40gqirLpozZp1ocZ34rfMwpdDUSUQS_lfgbwuAMA5ICo8jw4J Oxidation state trends in periodic table Trends in common oxidation states for main group elements.  https://cdn.kastatic.org/ka-youtube-converted/CCsNJFsYSGs.mp4/CCsNJFsYSGs.mp4 518 Redox reactions https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/e/redox-reaction 2026-03-06T13:40:44.784062872Z Redox reaction To practice questions on the substance which undergoes oxidation and reduction simultaneously Chaitra exercise https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/practice-determining-oxidation-states 2021-07-14T12:44:36Z Practice determining oxidation states Determining oxidation numbers in magnesium oxide and magnesium hydroxide.  Sal Khan video https://cdn.kastatic.org/googleusercontent/MW-R4X2Deo4E5ThMn1kGu9xnoPywCkhf4EeBc9xc42geFHs6j5-F-lKK23rl1fQ2_N8MkrGR8DowM1zM2L5ixkBo Practice determining oxidation states Determining oxidation numbers in magnesium oxide and magnesium hydroxide.  https://cdn.kastatic.org/ka-youtube-converted/M7PnxSQedkM.mp4/M7PnxSQedkM.mp4 267 Redox reactions https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:oxidation-reduction-redox-reactions/e/oxidation-reduction-redox-reactions 2023-06-20T18:48:34.872331336Z Oxidation–reduction (redox) reactions Check your understanding of redox reactions in this set of free practice questions designed for AP Chemistry students. exercise https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/unusual-oxygen-oxidation-states 2021-07-14T12:44:36Z Unusual oxygen oxidation states Determining oxidation numbers in hydrogen peroxide, H₂O₂, and oxygen difluoride, OF₂.  Sal Khan video https://cdn.kastatic.org/googleusercontent/ZAtvhgl2_EkgfL0cLjAvuaY2ZuwYzneTEX41BsWE0NB1ZmBMB8Pu83sUxlJ9N2xB9b3i1Fcbb5YUhTcXfTQeuxMsOA Unusual oxygen oxidation states Determining oxidation numbers in hydrogen peroxide, H₂O₂, and oxygen difluoride, OF₂.  https://cdn.kastatic.org/ka-youtube-converted/R2EtXOoIU-E.mp4/R2EtXOoIU-E.mp4 255 Redox reactions https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:oxidation-reduction-redox-reactions/v/worked-example-using-oxidation-numbers-to-identify-oxidation-and-reduction 2022-09-05T08:18:59.810508578Z Worked example: Using oxidation numbers to identify oxidation and reduction By assigning oxidation numbers to the atoms of each element in a redox equation, we can determine which element is oxidized and which element is reduced during the reaction. In this video, we'll use this method to identify the oxidized and reduced elements in the reaction that occurs between I⁻ and MnO₄⁻ in basic solution. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/54ec28fd-7ad7-48c1-b53e-66b8b3140615_1280_720_base.png Worked example: Using oxidation numbers to identify oxidation and reduction By assigning oxidation numbers to the atoms of each element in a redox equation, we can determine which element is oxidized and which element is reduced during the reaction. In this video, we'll use this method to identify the oxidized and reduced elements in the reaction that occurs between I⁻ and MnO₄⁻ in basic solution. https://cdn.kastatic.org/ka-youtube-converted/CsgVO0ldmQs.mp4/CsgVO0ldmQs.mp4 303 Redox reactions https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/e/redox-reactions-examprep 2025-01-29T06:20:02.849910205Z Redox reactions Let's test our understanding of redox reactions through this exercise. Revathi exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-reactions/x2613d8165d88df5e:types-of-chemical-reactions/v/simple-redox-reactions 2024-07-03T22:39:39.589282457Z Simple redox reactions An oxidation/reduction reaction (also known as a "redox" reaction) involves the transfer of electrons. The first definition of oxidation was indeed about oxygen, and meant that an element or compound gained oxygen atoms. However, we eventually came to understand that these chemical reactions frequently involved a transfer of electrons. When an atom loses electrons, it is oxidized. The atom that gains electrons is said to be reduced. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/66664bc7-2ce1-4385-a670-d59ce3706649_1280_720_base.png Simple redox reactions An oxidation/reduction reaction (also known as a "redox" reaction) involves the transfer of electrons. The first definition of oxidation was indeed about oxygen, and meant that an element or compound gained oxygen atoms. However, we eventually came to understand that these chemical reactions frequently involved a transfer of electrons. When an atom loses electrons, it is oxidized. The atom that gains electrons is said to be reduced. https://cdn.kastatic.org/ka-youtube-converted/JH4tn5dyXyE.mp4/JH4tn5dyXyE.mp4 775 Redox reactions https://www.khanacademy.org/science/bridge-course-class-11th-chemistry/x426c9d2c554669cb:basic-concepts-of-chemistry/x426c9d2c554669cb:ionic-compounds/e/predict-charges-on-monatomic-ions 2025-04-09T10:12:02.040424533Z Predict the charge on monatomic ions Predict the monatomic ion formed from different elements based on the position in the periodic table. Yuki exercise https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/e/oxidation-and-reduction 2025-02-05T10:28:14.374739025Z Oxidation and reduction - Electron transfer reactions Let's test our understanding of oxidation and reduction in terms of electron transfer reaction. exercise https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:introduction-to-titration/v/redox-titration 2021-06-24T11:08:08Z Redox titrations A redox titration is a titration in which the analyte and titrant react through an oxidation–reduction reaction. As in acid–base titrations, the endpoint of a redox titration is often detected using an indicator. Potassium permanganate (KMnO₄) is a popular titrant because it serves as its own indicator in acidic solution. Jay video https://cdn.kastatic.org/googleusercontent/BPObG2_2bDElT6YXT4u0uqA8IzbzsPJUwnEvyWimCOn98PAKgSy6JZcFm6fewADrgywPFPNtfpgBTpcypR8u2K0 Redox titrations A redox titration is a titration in which the analyte and titrant react through an oxidation–reduction reaction. As in acid–base titrations, the endpoint of a redox titration is often detected using an indicator. Potassium permanganate (KMnO₄) is a popular titrant because it serves as its own indicator in acidic solution. https://cdn.kastatic.org/ka-youtube-converted/EQJf8Gb8pg4.mp4/EQJf8Gb8pg4.mp4 478 Redox reactions https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:chemical-reactions/x2eef969c74e0d802:oxidation-reduction-redox-reactions/v/worked-example-balancing-a-simple-redox-equation 2022-10-05T02:43:18.611402953Z Worked example: Balancing a simple redox equation A redox equation can be balanced using the following stepwise procedure: (1) Divide the equation into two half-reactions. (2) Balance each half-reaction for mass and charge. (3) Equalize the number of electrons transferred in each half-reaction. (4) Add the half-reactions together. In this video, we'll use these steps to balance the redox equation for the reaction between aluminum metal and hydrogen ions. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/b60e38eb-f4b8-4180-8fd9-22c6a5d113ba_1280_720_base.png Worked example: Balancing a simple redox equation A redox equation can be balanced using the following stepwise procedure: (1) Divide the equation into two half-reactions. (2) Balance each half-reaction for mass and charge. (3) Equalize the number of electrons transferred in each half-reaction. (4) Add the half-reactions together. In this video, we'll use these steps to balance the redox equation for the reaction between aluminum metal and hydrogen ions. https://cdn.kastatic.org/ka-youtube-converted/MxjCto0BYd4.mp4/MxjCto0BYd4.mp4 431 Redox reactions https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/oxidizing-and-reducing-agents-1 2021-07-14T13:19:40Z Oxidizing and reducing agents How to identify the oxidizing and reducing agents.  Jay video https://cdn.kastatic.org/googleusercontent/xJUHrRjMED1cHBi8BejmCitb3_d-toiYG8p2mcLbUi9WDQ0QuDr4AaZVRaLxb3eYUcsFu5o_9dhV1pMO-7mb7wY Oxidizing and reducing agents How to identify the oxidizing and reducing agents.  https://cdn.kastatic.org/ka-youtube-converted/TOdHMORp4is.mp4/TOdHMORp4is.mp4 510 Redox reactions https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:redox-reactions/e/oxidising-and-reducing-agents 2021-04-29T08:00:45Z Oxidising and reducing agents Let's practice identifying oxidizing and reducing agents in redox reactions. exercise