Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

This compound is produced with graphite in the Bosch reaction, and organic reactions in this medium have been demonstrated to be faster than in toluene and cyclohexane by Sharpless. This compound notably has a solid-liquid boundary with a (*) negative slope on a phase diagram, and the absolute temperature scale is based on this compound's triple point. It is produced with carbon dioxide during combustion, and this molecule has a bent geometry and two lone pairs, allowing the formation of multiple hydrogen bonds that reduce its density when solid. For ten points, identify this "universal solvent" with formula H2O.
Science