Turn one into a particle for which there's no charge (7)
I believe the answer is:
neutron
'no charge' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'turn one into a particle for which there's' is the wordplay.
'turn' becomes 't' (abbreviation in Oxford Dictionary of Abbreviations).
'one into' indicates putting letters inside.
'a particle' becomes 'neuro' (I can't explain this - if you can you should believe this answer much more).
'for which' is a charade indicator (letters next to each other).
'there's' becomes 'n' (I've seen this in other clues).
't' put inside 'neuro' is 'neutro'.
'neutro'+'n'='NEUTRON'
Can you help me to learn more?
(Other definitions for neutron that I've seen before include "Particle that decays when released" , "Charged particle" , "one's not charged" , "Uncharged particle in a nucleus" , "Uncharged atomic particle" .)