Combining Philosophers

Ideas for Peter B. Lewis, Eric R. Scerri and Einstein,A/Infeld,L

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19 ideas

27. Natural Reality / E. Chemistry / 1. Chemistry
A big chemistry idea is that covalent bonds are shared electrons, not transfer of electrons [Scerri]
Does radioactivity show that only physics can explain chemistry? [Scerri]
How can poisonous elements survive in the nutritious compound they compose? [Scerri]
Periodicity and bonding are the two big ideas in chemistry [Scerri]
Chemistry does not work from general principles, but by careful induction from large amounts of data [Scerri]
The electron is the main source of chemical properties [Scerri]
27. Natural Reality / E. Chemistry / 2. Modern Elements
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]
27. Natural Reality / E. Chemistry / 3. Periodic Table
The best classification needs the deepest and most general principles of the atoms [Scerri]
Elements were ordered by equivalent weight; later by atomic weight; finally by atomic number [Scerri]
Since 99.96% of the universe is hydrogen and helium, the periodic table hardly matters [Scerri]
Moseley showed the elements progress in units, and thereby clearly identified the gaps [Scerri]
To explain the table, quantum mechanics still needs to explain order of shell filling [Scerri]
Moseley, using X-rays, showed that atomic number ordered better than atomic weight [Scerri]
Some suggested basing the new periodic table on isotopes, not elements [Scerri]
Elements are placed in the table by the number of positive charges - the atomic number [Scerri]
Elements in the table are grouped by having the same number of outer-shell electrons [Scerri]
Orthodoxy says the periodic table is explained by quantum mechanics [Scerri]
Pauli explained the electron shells, but not the lengths of the periods in the table [Scerri]