Gaafaru (Kaafu Atoll) deep channel - the Gaafaru Kandu. Its lagoon has an average depth of 16 fathoms (30 m) and has no coral patches or shoals in its centre. Gaafaru is a small island surrounded by a big reef. Gaafaru (Kaafu Atoll) Gaafaru (Dhivehi: ގާފަރު) is one of the inhabited islands of Kaafu Atoll, the only island of the natural atoll known as Gaafaru. The island is north of the country's capital, Malé. Gahaafaru or Gaafaru (Northern Reef) is a large elliptical reef with only a small inhabited island at its eastern end. This reef has proved disastrous to many vessels. Gaafaru
Chemical substance and the International Chemical Identifier or InChI. Often a pure substance needs to be isolated from a mixture, for example from a natural source (where a sample often contains numerous chemical substances) or after a chemical reaction (which often give mixtures of chemical substances). Chemical substance A chemical substance is a form of matter having constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances, chemical compounds, or alloys. Chemical elements may or may not be included in the definition, depending on expert