The Hill system is a system of writing chemical formulas such that the number of carbon atoms in a molecule is indicated first, the number of hydrogen atoms next, and then the number of all other chemical elements subsequently, in alphabetical order. When the formula contains no carbon, all the elements, including hydrogen, are listed alphabetically. This deterministic system enables straightforward sorting and searching of compounds.
Read more about this topic: Chemical Formula
Famous quotes containing the words hill and/or system:
“I remember the scenes of battle in which we stood together. I remember especially that broad and deep grave at the foot of the Resaca hill where we left those gallant comrades who fell in that desperate charge. I remember, through it all, the gallantry, devotion and steadfastness, the high-set patriotism you always exhibited.”
—Benjamin Harrison (1833–1901)
“Ethics and religion differ herein; that the one is the system of human duties commencing from man; the other, from God. Religion includes the personality of God; Ethics does not.”
—Ralph Waldo Emerson (1803–1882)