Question
Iam doing a school science experment on impations.what temptaure should we leave the plants outside ? it`s 83 drgrees during the day and 58 at night in florida .(their still in pots that they came in)

Answer
Bryan,
I'm assuming that you are asking what temperature will kill them, yes?  Your temperatures as they are will be fine for impatiens - they don't start to decline until the temperature goes below about 36 degrees.   Just be sure to keep them watered as the day time temperatures will dry them out, especially if they are getting any direct sun.

Your plants will do better outside than inside - indoors they will be prone to aphids and whitefly, which could mess up your experiment.

all the best,
C.L.