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Single Idea 17475

[filed under theme 27. Natural Reality / F. Chemistry / 1. Chemistry ]

Full Idea

Having a particular average kinetic energy is only a necessary condition for having a given temperature, not a sufficient one, because only gases at equilibrium have a well-defined temperature.

Gist of Idea

For temperature to be mean kinetic energy, a state of equilibrium is also required

Source

Weisberg/Needham/Hendry (Philosophy of Chemistry [2011], 6.2)

Book Ref

'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.35


A Reaction

If you try to pin it all down more precisely, the definition turns out to be circular.


The 11 ideas from 'Philosophy of Chemistry'

Lavoisier's elements included four types of earth [Weisberg/Needham/Hendry]
Mendeleev systematised the elements, and also gave an account of their nature [Weisberg/Needham/Hendry]
Isotopes (such as those of hydrogen) can vary in their rates of chemical reaction [Weisberg/Needham/Hendry]
Over 100,000,000 compounds have been discovered or synthesised [Weisberg/Needham/Hendry]
Water molecules dissociate, and form large polymers, explaining its properties [Weisberg/Needham/Hendry]
'H2O' just gives the element proportions, not the microstructure [Weisberg/Needham/Hendry]
Using mechanisms as explanatory schemes began in chemistry [Weisberg/Needham/Hendry]
Thick mechanisms map whole reactions, and thin mechanism chart the steps [Weisberg/Needham/Hendry]
It is unlikely that chemistry will ever be reduced to physics [Weisberg/Needham/Hendry]
Quantum theory won't tell us which structure a set of atoms will form [Weisberg/Needham/Hendry]
For temperature to be mean kinetic energy, a state of equilibrium is also required [Weisberg/Needham/Hendry]