Summarize two of Jurgis' actions that demonstrate his attitude change.

Really the whole chapter is a reflection of his change in attitude. Here are two points but if you follow the link, you will see this echoed through the chapter.

He sneaks past the train keeper’s shed and jumps on a moving freight car that takes him out of the city and into the country.

Jurgis decides now that he will leave the slavery of the city and become free. He decides, “This was no world for women and children, and the sooner they got out of it the better for them.”

http://www.gradesaver.com/the-alchemist-coelho/study-guide/section4/