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Single Idea 17467

[filed under theme 27. Natural Reality / F. Chemistry / 2. Modern Elements ]

Full Idea

There are chemically salient differences among the isotopes, best illustrated by the three isotopes of hydrogen: protium, deuterium and tritium, which show different rates of reaction, making heavy water poisonous where ordinary water is not.

Gist of Idea

Isotopes (such as those of hydrogen) can vary in their rates of chemical reaction

Source

Weisberg/Needham/Hendry (Philosophy of Chemistry [2011], 1.4)

Book Ref

'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.10


A Reaction

[They cite Paul Needham 2008] The point is that the isotopes are the natural kinds, rather than the traditional elements. The view is unorthodox, but clearly makes a good point.


The 9 ideas with the same theme [92 natural elements, and some further ones]:

Elements don't survive in compounds, but the 'substance' of the element does [Mendeleev]
Is one atom a piece of gold, or is a sizable group of atoms required? [Inwagen]
The real natural properties are sparse, but there are many complex properties [Heil]
Elements survive chemical change, and are tracked to explain direction and properties [Hendry]
Defining elements by atomic number allowed atoms of an element to have different masses [Hendry]
19th C views said elements survived abstractly in compounds, but also as 'material ingredients' [Scerri]
It is now thought that all the elements have literally evolved from hydrogen [Scerri]
An 'element' is what cannot be decomposed by chemistry [Martin,BR]
Isotopes (such as those of hydrogen) can vary in their rates of chemical reaction [Weisberg/Needham/Hendry]