Scientists in pieces over schmoe I experimented on (11)

'scientists' is the definition.
(biochemist is a kind of scientist)

'in pieces over schmoe i experimented on' is the wordplay.
'in pieces' indicates anagramming the letters.
'over' means one lot of letters go next to another (in a down clue, some letters go over others).
'experimented' becomes 'bits' (I can't explain this - if you can you should believe this answer much more).
'on' is an insertion indicator (as in clothing 'on' a person).
'schmoe' after 'i' is 'ischmoe'.
'ischmoe' is an anagram of 'ochemis'.
'ochemis' inserted inside 'bits' is 'BIOCHEMISTS'.

Can you help me to learn more?