Punishment issued by school for what they made in chemistry class (10)
I believe the answer is:
suspension
'class' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for suspension that I've seen before include "Discord" , "Car's shock-absorbing system" , "Ride-smoothing system" , "Mixture with particles dispersed in a fluid" , "being taken off the job" .)