28 JAN 2012 by ideonexus Consider Structure in a Molecule's Nature
Not just the quantity of its elements.
Folksonomies: chemistry,molecules
09 JUN 2011 by ideonexus The Uselessness of Nitrogen in the Atmosphere
Raymo describes how many pounds of each element there are in his body, and why, despite them mostly all existing in the air we breath, they are bound up in molecules so that we cannot access them.
Folksonomies: biology,chemistry,molecules,nitrogen,elements,atmosphere