https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:atoms-and-molecules/x46dd29ce84a663ea:molecules-and-ions/a/paul-article-2 2021-04-29T08:00:35Z Molecules and compounds Compounds can be classified as ionic or covalent. Molecules are the simplest unit of a covalent compound, and molecules can be represented in many different ways.  article https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:bonding-in-carbon-covalent-bond/v/covalent-bond-carbon-and-its-compounds-chemistry-khan-academy 2020-09-04T10:56:27Z Covalent bond Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Created by Ram Prakash video https://cdn.kastatic.org/googleusercontent/rmJ4ya2LxbTV1NGtm2rRR7WJG7ylkYf_jAuz_n7aoUM7DxDQJFAZ3sSQESnwOsNB-7MI5tI8umSw3E0S6AsyJ9Y Covalent bond Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Created by Ram Prakash https://cdn.kastatic.org/ka-youtube-converted/jigBe0moNgQ.mp4/jigBe0moNgQ.mp4 754 How Atoms Combine? https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:bonding-in-carbon-covalent-bond/v/covalent-bond-and-lewis-dot-structure-h2o-co2-chemistry-khan-academy 2020-09-04T10:56:21Z Covalent bond and Lewis dot structure (H2O & CO2) More free lessons & practice "Link" Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Created by Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/b4x9ywRxIsyaVPOXd_7GlFi6TG9u5XMHDjnVLmPKHD7jGhZHXgsNKuZvE_kbNzoLAN9CkH4-VUU-Emca0Cl2NpM Covalent bond and Lewis dot structure (H2O & CO2) More free lessons & practice "Link" Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Created by Mahesh Shenoy https://cdn.kastatic.org/ka-youtube-converted/pieio6ohw9c.mp4/pieio6ohw9c.mp4 612 How Atoms Combine? https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:bonding-in-carbon-covalent-bond/a/single-and-multiple-bonds-class-10-chemistry 2021-04-29T07:48:34Z Single and multiple covalent bonds article https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:covalent-bonds/e/understand-covalent-bonds 2026-04-26T16:30:39.382257956Z Understand: Covalent bonds Check your understanding of covalent bonds in this set of free practice questions. Emily Cizmas exercise https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:bonding-in-carbon-covalent-bond/e/simple-electron-dot-structures 2026-05-12T22:10:47.015864082Z Dot structures: simple homoatomic covalent molecules Let's practice identifying dot structures of simple covalent molecules. Chaitra exercise https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:bonding-in-carbon-covalent-bond/e/dot-structures-heteroatomic-covalent-molecules 2026-05-12T22:10:47.015864082Z Dot structures: heteroatomic covalent molecules Check your understanding of identifying the dot structures of heteroatomic molecules by knowing the valence electrons they share to achieve a full octet or duet (in the case of hydrogen). exercise https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:metals-and-non-metals/x28e877d8a7566183:metals-reaction-with-nonmetals/v/ionic-bonds-reaction-of-metals-non-metals-metals-and-non-metals-chemistry-khan-academy 2020-08-26T05:42:16Z Ionic bonds: Reaction of metals & Non-metals Metals and nonmetals react by transfer of electron. Ram Prakash video https://cdn.kastatic.org/googleusercontent/ubBmOTjW9qoNKxz0VP5vVxQfwQS7deu2OzMFmJ_-M4faiweBbRNQnNniKI83P6uU_8IxHqofUHp6Shn6AFr8l11s Ionic bonds: Reaction of metals & Non-metals Metals and nonmetals react by transfer of electron. https://cdn.kastatic.org/ka-youtube-converted/q-wwE6qkcTk.mp4/q-wwE6qkcTk.mp4 589 How Atoms Combine? https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:metals-and-non-metals/x28e877d8a7566183:metals-reaction-with-nonmetals/e/formation-of-ionic-compounds 2026-03-31T01:02:11.609621879Z Formation of ionic compounds Let's practice on identifying the formation of ionic compounds by electron transfer method. Chaitra exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:metallic-bonds/e/apply-predicting-bond-type 2026-04-27T10:30:47.716252349Z Apply: Predicting bond type Apply your knowledge to predict bond type in this set of free practice questions. Emily Cizmas exercise