A Moment of Science

Posts tagged chemical composition

December 20, 2005

 

Why Is Dry Ice Dry?

How does dry ice perform this disappearing act? Why is dry ice dry?

September 27, 2003

 

Salty Seas

Kimberly Sessions, of Atlanta, Georgia wrote to A Moment of Science with the following question: “I know why the ocean is still salty: evaporated water leaves the salt behind. But how did it get salty in the first place?”

September 27, 2003

 

Bitumen

A natural by-product of the distillation of crude oil, bitumen is a thick, gooey substance usually black or dark brown in color.

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