PLZ HELP ME WITH MY WORK​

Can someone me with 3 and 4 plz. this is for masteries test.

Chemistry worksheet - i am not sure what they are asking for exactly?

Which sentence from holes contains an implied personality trait? stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do. he'd just been in the wrong place at the wrong time. stanley felt somewhat dazed as the guard unlocked his handcuffs and led him off the bus. stanley nodded to show he understood