Who are punished in hell? Those are punished in hell who die in mortal sin; they are deprived of the vision of God and suffer dreadful torments, especially that of fire, for all eternity.
The he will say to those on his left hand, "Depart from me, accursed ones, into the everlasting fire which was prepared for the devil and his angels." (Matthew 25:41)
Who are rewarded in heaven? Those are rewarded in heaven who have died in the state of grace and have been purified in purgatory, if necessary, from all venial sin and all debt of temporal punishment; they see God face to face and share forever in His glory and happiness.
Then the king will say to those on his right hand, "Come, blessed of my Father, take possession of the kingdom prepared for you from the foundation of the world." (Matthew 25:34)
Further reading: CCC 1023-1029
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