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.

Combustion reactions produce carbon dioxide, energy, and this substance. Sometimes called the "universal solvent", it has high surface tension because it forms many hydrogen bonds. This compound is unusual in that as it is cooled, it becomes less dense, so its solid form (*) floats on top of its liquid form. For 10 points, name this compound that boils at 100 degrees Celsius, freezes at zero degrees Celsius, and has formula H2O.
Science