Describe how Romeo's mood changes from the beginning to the end of Act 1. What or
who are his emotions mainly influenced by (in other words, what is Romeo constantly
thinking about in Act 1)?

I think his character does not change. The circumstances do, but he remains as intense and impulsive as he was at the beginning of the play. In Act 1, Romeo is lonely. He is deeply infatuated with a girl who essentially shuts him down. However hopeless it seems, though, he swears he will never love another.  

the answer:

in the first part of the story running is all that matters to squeaky. running gives her confidence and defines who she is. at the beginning of the story she says that other kids call her mercury because she runs very fast. in the text she refers to herself as "miss quicksilver".

the line that provides the best evidence that squeaky has self-confidence is

" and i continue with my breathing exercise, strolling down broadway toward the ice cream man on 145th with not a care in the world cause i am miss quicksilver herself".