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[edit] Freezing temperature
We have boiling, melting etc... Please can someone add freezing point. — Preceding unsigned comment added by 86.11.79.150 (talk) 15:26, 20 February 2012 (UTC)
- We don't use the term "freezing point"; we use the term "melting point." It's the same point. Rklawton (talk) 18:08, 20 February 2012 (UTC)
[edit] Phlogiston and inflammable air
{{Edit semi-protected}} "discrete substance, by identifying the gas from a metal-acid reaction as "phlogiston", meaning "flammable air""
should be replaced with:
"discrete substance, by naming the gas from a metal-acid reaction "flammable air". He speculated that "flammable air" was in fact identical to the hypothetical substance called "phlogiston""
Phlogiston doesn't mean inflammable air at all. It was a hypothetical substance introduced several years before to solve problems around combustion, smelting of metals, etc. Because the new gas he discovered matched some of the features expected of phlogiston (i.e. that it was light, that it could sustain combustion in ordinary air, etc.) led Cavendish to speculate that they were one and the same. The history of this is discussed here: http://ebooks.cambridge.org/chapter.jsf?bid=CBO9780511760013&cid=CBO9780511760013A009
- Done. Chzz ► 07:36, 22 October 2011 (UTC)
[edit] Elemental molecular forms
I find the section "Elemental molecular forms" unsatisfactory in focusing mainly on the ortho/para physics, which is a curious detail, but indeed only little more than a detail (and is covered by its own page). IMHO this section should describe mostly (at an elementary level) the electronic structure of the H2 molecule, which is the simplest example of a covalent bond. It should explicitly refer to the Dihydrogen cation] page for details of the orbitals. I could volunteer to write something in this sense if the page gets unlocked to me. I am fairly expert in this field (see http://www.mi.infm.it/manini/). If someone more expert, e.g. a theoretical chemist, wishes to do it, I'd be more than glad to step back! Nicola.Manini (talk) 14:00, 8 November 2011 (UTC)
[edit] N-ethylcarbazol
Perhaps N-ethylcarbazol can be mentioned that can be "charged" with hydrogen. See http://www.elektor.nl/nieuws/carbazol-elektro-benzine.1882087.lynkx 91.182.21.28 (talk) 13:57, 9 February 2012 (UTC)
