I'm gonna do some more research then i'll get back to you on this.
Angel island I've been there on a field trip it was pretty cool
Answer: So if you used the balloon experiment her is the answer
We also know that air has mass because the balloon with air was heavier than the balloon without air. So by our definition of matter as something with mass that takes up space, we can see that air is matter!
Explanation:
Not giving her seat up to a white man or a segregated bus. It sparked a lot of conflict which led to peaceful protest.