Gave tart response when so caught on film (7)
I believe the answer is:
snapped
'gave' is the definition.
The answer and definition can be both related to change as well as being past participle verbs.
Perhaps there's a link between them I don't understand?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for snapped that I've seen before include "Broke with a crack" , "What paparazzi did" , "Took photograph" , "Broke; photographed" , "Bit" .)