Why might you want to repeat your experiment? Check all the possible choices. A: to make sure that your results are accurate
B: Incorrect hypothesis
C: Did not fully observe the problem
D: Set up the experiment poorly

A,C,D

Explanation:

I belive these are the right answers, you would not redo an experiment just because your hypothesis was wrong that would be silly.

option a and d is the correct answer

i hope this u

plz mark as the brainliest answer

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.