inocente;13580675:
You seem to be describing an emasculated version of atomism there. I’ll quote some public definitions of physicalism by way of contrast:
“Physicalism: The doctrine that the real world consists simply of the physical world.” - oxforddictionaries.com/definition/english/physicalism
“In philosophy, physicalism is the ontological thesis that “everything is physical”, that there is “nothing over and above” the physical, or that everything supervenes on the physical.” -
en.wikipedia.org/wiki/Physicalism
“Physicalism is the thesis that everything is physical, or as contemporary philosophers sometimes put it, that everything supervenes on the physical. The thesis is usually intended as a metaphysical thesis, parallel to the thesis attributed to the ancient Greek philosopher Thales, that everything is water, or the idealism of the 18th Century philosopher Berkeley, that everything is mental. The general idea is that the nature of the actual world (i.e. the universe and everything in it) conforms to a certain condition, the condition of being physical. Of course, physicalists don’t deny that the world might contain many items that at first glance don’t seem physical — items of a biological, or psychological, or moral, or social nature. But they insist nevertheless that at the end of the day such items are either physical or supervene on the physical.” -
plato.stanford.edu/entries/physicalism/
Hopefully you can see from the above definitions that you’re not describing physicalism
as it is believed, but are instead attacking a strawman of your own devising.
You are still confusing emergent with reductive materialism/physicalism.