Rongelap Atoll scrape off a few inches of Rongelap's still contaminated surface. However, this is an operation deemed impossible by some critics. In recent years, James Matayoshi, the mayor of Rongelap, claimed that the cleanup was successful and envisioned a new promising future for the inhabitants and for tourists. Scientific measurements made in August 2014 verified a safe level of radiation on Rongelap. Marshall Islands Public School System operates Mejatto Elementary School, which serves the community in Mejatto that resided in Rongelap Atoll. Rongelap Atoll Rongelap Atoll (Marshallese: , ) is a coral atoll of 61 islands (or motus) in the Pacific
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