Water is common name applied to the liquid state of the hydrogen-oxygen compound H2O. the ancient philosophers regarded water as a basic element typifying all liquid substance.
Almost all the hydrogen in water has an atomic weight of 1. The American chemist Harold Clayton Urey discovered in 1932 the presence in water of a small amount (1part in 6000) of so called heavy water, or deuterium oxide (D2O); deuterium is the hydrogen isotope with an atomic weight of 2 in 1951 the American chemist Aristid Grosse discovered that naturally occurring water contains also minute traces of tritium oxide (T2O); tritium is hydrogen isotope with an atomic weight of 3. Water flows and moves from high surface to low surface.
0 komentar:
Posting Komentar