Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
acetic ether aeriform alcohol alkali amount atom of oxygen atomic weights atoms of hydrogen burning butyric acid calcic called carbonic dioxide charcoal chemical change chemist chemistry color combination combustion consists contain criths cubic cubic centimetres cule definite elementary substances elements energy equal ether evidence example experiment fact film flame formic acid gases glass grammes heat Hence hydrate hydrochloric acid hydrogen hydrogen gas hydrogen-atoms illustrate inch iron lecture light liquid litre mass material metal microcriths mole molecular structure molecular weight molecule of oxygen molecule of water molecules nitric acid nitro-glycerine nitrogen notice number of molecules obtained oxide oxygen oxygen atoms oxygen gas particles phenomena phosphorus polarized poles potassic pounds pressure proportions quantivalence radical reaction result salt simple sodic sodium solid solution specific gravity sugar sulphur symbol temperature theory tion vapor volatile volume wholly
Página 50 - Avogadro's principle or hypothesis, which states that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules, was the extension of Dalton's Atomic Theory necessary to put the theoretical interpretation of chemistry on a solid foundation.
Página 212 - ... human agency can withstand, does it seem as if any power could undo that work of destruction, and rebuild those beams and rafters which are disappearing in the flames ? Yet in a few years they will be rebuilt. This mighty force will be overcome ; not, however, as we might expect, amidst the convulsion of nature, or the clashing of the elements, but silently, in a delicate leaf waving in the sunshine.