Water
Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at temperatures above 0 °C (273.15 K, 32 °F) at sea level, but it often co-exists on Earth with its solid state, ice, and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces.
Read more about Water.
Famous quotes containing the word water:
“We have to learn how to come out of unclean situations cleaner than we were, and even how to wash ourselves with dirty water when we need to.”
—Friedrich Nietzsche (1844–1900)
“All good writing is swimming under water and holding your breath.”
—F. Scott Fitzgerald (1896–1940)
“If water is too clear, it will not contain fish; people who are too cautious will never gain wisdom.”
—Chinese proverb.