Hottest Cities in United States. Two major cities contend for the title of hottest city in the United States. The city that comes out on top depends on how you measure heat. Phoenix Arizona excels at extreme hot weather. It consistently ranks number one for the most days a year when temperatures rise above 89 Â°F or 99 Â°F. Miami challenges Phoenix for top spot on hottest year-round temperatures.
would a chemist most likely study: a leaf changing color in the fall. OR. a leaf floating on water. Follow.
Known as the central science, chemistry is the study of the properties of and interactions between matter and energy. Matter is stuff, and atoms are what make up that stuff. So you could say that chemists study all the stuff on Earth as well as what that stuff itself is made of!