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.
Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy. Many people think of chemists as being white-coated scientists mixing strange liquids in a laboratory, but the truth is we are all chemists.