Chemical Evolution

Chemical evolution may refer to:

  • Stellar nucleosynthesis, the creation of chemical elements by stellar thermonuclear fusion or supernovae
  • Abiogenesis, the transition from nonliving elements to living systems
  • Molecular evolution, evolution at the scale of molecules
  • Gas evolution reaction, the process of a gas bubbling out (or evolving) from a solution
  • Oxygen evolution, the process of generating molecular oxygen through chemical reaction

Famous quotes containing the words chemical and/or evolution:

    We do not want actions, but men; not a chemical drop of water, but rain; the spirit that sheds and showers actions, countless, endless actions.
    Ralph Waldo Emerson (1803–1882)

    Analyze theory-building how we will, we all must start in the middle. Our conceptual firsts are middle-sized, middle-distanced objects, and our introduction to them and to everything comes midway in the cultural evolution of the race.
    Willard Van Orman Quine (b. 1908)