Why do you think that if you drop two balls, exactly two balls rise on the other side at a similar speed? Why doesn’t one ball fly off quickly instead? Why don’t three balls fly off slowly? This is a difficult question, but try your best to think about what you know and what might make sense.

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing