The attraction between molecules (called intermolecular forces) will be discussed in more detail in Section 8.1. Sodium metal has a positive charge, and chlorine gas has a negative charge on it, which causes these ions to form an ionic bond. Whereas ionic compounds are usually formed when a metal and a nonmetal combine, covalent compounds are usually formed by a combination of nonmetals. To name acids, the prefix hydro- is placed in front of the nonmetal modified to end with ic. To name them, follow these quick, simple rules: Video 2.7.e: (1'28") Acid Salts 1: Youtube for naming compounds that can form from carboxylate (acid, salt and acid salt), Video 2.7.f: (3'19") Acid Salts 2: YouTube naming the compounds that can form from phosphate (acid, salt, and acid salts). [CDATA[*/{"annotations":null,"assetRoot":null,"branding":null,"clientUrl":"https://cdn.hypothes.is/hypothesis/1.38.0/build/boot.js","oauthEnabled":null,"onLayoutChange":null,"openLoginForm":null,"openSidebar":null,"query":null,"services":null,"showHighlights":"always","sidebarAppUrl":"https://hypothes.is/app.html","subFrameIdentifier":"010467613778616003","pluginClasses":{}}/*]]>*/, /**/, /**/, /**/, /**/, /**/, /*