Water in two states: liquid (including the clouds, which are examples of aerosols), and solid (ice).
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth’s streams, lakes, and oceans, and the fluids of most living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms connected by covalent bonds.
A ridiculous amount of coffee was consumed in the process of building this project. Add some fuel if you'd like to keep me going!