https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:ionic-nomenclature/v/naming-ions-and-ionic-compounds 2022-10-26T22:01:10.867792203Z Naming ions and ionic compounds Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. For example, KCl, an ionic compound that contains K⁺ and Cl⁻ ions, is named potassium chloride. video https://cdn.kastatic.org/googleusercontent/F9fhxeAzbl5tczOC_KxI5UnfufCJyVdO9qXgu-Rltqyf00aQlHvx_6KjnT27peERAhBSPipQTUL_5Zz001iLpgdW Naming ions and ionic compounds Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. For example, KCl, an ionic compound that contains K⁺ and Cl⁻ ions, is named potassium chloride. https://cdn.kastatic.org/ka-youtube-converted/ptAw20kem90.mp4/ptAw20kem90.mp4 237 Ion and ionic bonds https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-isotopes-and-ions/x2613d8165d88df5e:ions/v/introduction-to-ions 2023-12-18T19:15:22.874322042Z Introduction to ions An atom with an electric charge is called an ion. A positively charged ion (a cation) has more protons than electrons. A negatively charged ion (an anion) has more electrons than protons. video https://cdn.kastatic.org/googleusercontent/UAwfb6XNMO4aUhZwvvmHQIdu3oURWLZJAN_mgOX6sOKBYgq3IYFVWVOwlkBsC4Q_ry-upfT73FEpiQZ9YXvrRuHB Introduction to ions An atom with an electric charge is called an ion. A positively charged ion (a cation) has more protons than electrons. A negatively charged ion (an anion) has more electrons than protons. https://cdn.kastatic.org/ka-youtube-converted/zTUnjPALX_U.mp4/zTUnjPALX_U.mp4 397 Ion and ionic bonds https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:ionic-bonds/v/representing-ionic-solids-using-particulate-models 2023-12-18T19:15:22.874322042Z Representing ionic solids using particulate models The cations and anions in an ionic solid are arranged in a lattice structure that maximizes the attractive forces between opposite charges and minimizes the repulsive forces between like charges. The structure of an ionic solid can be represented using a particulate model. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/03b4c948-32ec-49cd-a6a7-d1450a7f6f20_1280_720_base.png Representing ionic solids using particulate models The cations and anions in an ionic solid are arranged in a lattice structure that maximizes the attractive forces between opposite charges and minimizes the repulsive forces between like charges. The structure of an ionic solid can be represented using a particulate model. https://cdn.kastatic.org/ka-youtube-converted/sAhRvgX4tQk.mp4/sAhRvgX4tQk.mp4 343 Ion and ionic bonds https://www.khanacademy.org/science/ap-biology/chemistry-of-life/introduction-to-biological-macromolecules/v/ionic-bonds 2023-03-31T23:16:47.953017837Z Ionic bonds Atoms interact with each other through the formation of chemical bonds. One type of chemical bond is an ionic bond. Ionic bonds result from the attraction between oppositely charged ions. For example, sodium cations (positively charged ions) and chlorine anions (negatively charged ions) are connected via ionic bonds in sodium chloride, or table salt. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/78c67bc9-cdff-44b8-b61d-e44a9f9f0e4d_1280_720_base.png Ionic bonds Atoms interact with each other through the formation of chemical bonds. One type of chemical bond is an ionic bond. Ionic bonds result from the attraction between oppositely charged ions. For example, sodium cations (positively charged ions) and chlorine anions (negatively charged ions) are connected via ionic bonds in sodium chloride, or table salt. https://cdn.kastatic.org/ka-youtube-converted/FaeAurHnQJs.mp4/FaeAurHnQJs.mp4 250 Ion and ionic bonds https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:atoms-elements-and-compounds/x8bc8fb44369617ed:ion-and-ionic-bonds/v/formation-of-ionic-compounds-ur 2025-08-08T00:50:08.705567982Z Formation of ionic compounds Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Formation of ionic compounds Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/cwc1KaqAQFk.mp4/cwc1KaqAQFk.mp4 481 Ion and ionic bonds https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:metallic-bonds/v/predicting-bond-type-metals-nonmetals 2022-10-05T02:43:18.611402953Z Predicting bond type (metals vs. nonmetals) One way to predict the type of bond that forms between two elements is to consider whether each element is a metal or nonmetal. In general, covalent bonds form between nonmetals, ionic bonds form between metals and nonmetals, and metallic bonds form between metals. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/5ac7322b-62ed-4163-9c93-102d922a9848_1280_720_base.png Predicting bond type (metals vs. nonmetals) One way to predict the type of bond that forms between two elements is to consider whether each element is a metal or nonmetal. In general, covalent bonds form between nonmetals, ionic bonds form between metals and nonmetals, and metallic bonds form between metals. https://cdn.kastatic.org/ka-youtube-converted/B9GkAsd8EK8.mp4/B9GkAsd8EK8.mp4 312 Ion and ionic bonds https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:properties-of-solids/v/ionic-solids 2022-09-11T01:04:41.009667842Z Ionic solids Ionic solids are composed of cations and anions held together by electrostatic forces. Due to the strength of these interactions, ionic solids tend to be hard, brittle and have high melting points. Ionic solids are poor conductors of electricity except when their ions are mobile, such as when a solid is melted or dissolved in solution. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/db6b08b1-0803-4bfa-9100-ed0b61776800_1280_720_base.png Ionic solids Ionic solids are composed of cations and anions held together by electrostatic forces. Due to the strength of these interactions, ionic solids tend to be hard, brittle and have high melting points. Ionic solids are poor conductors of electricity except when their ions are mobile, such as when a solid is melted or dissolved in solution. https://cdn.kastatic.org/ka-youtube-converted/zax0lYlOdiI.mp4/zax0lYlOdiI.mp4 455 Ion and ionic bonds https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-isotopes-and-ions/x2613d8165d88df5e:ions/e/apply-ions 2026-04-28T11:00:37.315336883Z Apply: Ions Apply your understanding of ions in this set of free practice questions. Megan Cohn exercise https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:molecular-and-ionic-compound-structure-and-properties/x2eef969c74e0d802:structure-of-ionic-solids/e/structure-of-ionic-solids 2023-08-07T17:25:22.494770007Z Structure of ionic solids Practice identifying and interpreting particulate models of ionic solids in this set of free questions designed for AP Chemistry students. Lauren Rosebrugh exercise https://www.khanacademy.org/science/bridge-course-class-11th-chemistry/x426c9d2c554669cb:chemical-bonding/x426c9d2c554669cb:basics-of-covalent-bonding/e/formation-and-properties-of-ionic-compounds 2026-04-08T00:36:09.500768563Z Formation and properties of ionic compounds Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:ionic-bonds/e/apply-predicting-ion-formation 2026-04-29T07:20:45.495372596Z Apply: Predicting ion formation Apply your knowledge of trends in ion formation in this set of free practice questions. Emily Cizmas exercise https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:ionic-bonds/e/apply-ionic-bonds-and-compounds 2026-04-26T16:30:39.382257956Z Apply: Ionic bonds and compounds Apply your knowledge of ionic bonds and compounds in this set of free practice questions. Emily Cizmas exercise https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:properties-of-solids/e/properties-of-solids 2026-04-29T07:30:35.423600492Z Properties of solids Check your understanding of the properties of solids in this set of free practice questions designed for AP Chemistry students. exercise https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:atoms-and-molecules/x46dd29ce84a663ea:molecules-and-ions/a/naming-monatomic-ions-and-ionic-compounds 2021-04-29T07:59:16Z Naming monatomic ions and ionic compounds Learn how to name monatomic ions and ionic compounds containing monatomic ions, predict charges for monatomic ions, and understand formulas.  article https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-bonding/x2613d8165d88df5e:ionic-nomenclature/a/naming-ions-and-ionic-compounds 2026-04-26T16:30:39.382257956Z Learn and try: Naming ions and ionic compounds Learn how to name positive ions (cations), negative ions (anions), and ionic compounds involving main group elements. article 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/biology/water-acids-and-bases/hydrogen-bonding-in-water/a/water-as-a-solvent 2023-12-15T18:44:45.463322731Z Solvent properties of water Why water makes a good solvent, and what kinds of molecules dissolve best in it. article