Task: Text Categorization
Input (English): 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.
Output (English): Science