This is just an educated guess but I'll answer the best I can for you!
Unsafe behavior: Whispering to your lab partner while the teacher is talking
Safe behavior would be: Listening to the teacher instead of whispering to your lab partner so you can hear the instructions
Unsafe behavior: Using a graduated cylinder to measure the volume of a liquid after you notice that it has a chip in it
Safe behavior would be: Using a different cylinder that is not broken because the one with the chip can hurt someone.
First scenario, the expectation that is not being followed is:
The safety goggles need to be put on during the investigation so that the eyes won't get injured
Second scenario, the expectation that is not being followed is:
When holding sharp objects, in this case scissors, it needs to be closed and faced downward towards the ground, then wrapping the fingers around the outside of the blades so it cannot open up and cut. Do not run while holding sharp objects as well.
Hope these help! You may change the answers as well to what best fits you and the assignment!