Simplify the following text for a Grade 5 native English-speaking person.
Original: Krypton was discovered in Britain in 1898 by Sir William Ramsay , a Scottish chemist , and Morris Travers , an English chemist , in residue left from evaporating nearly all components of liquid air .
Simplified: It was found by Sir William Ramsay and Morris Travers in Great Britain in 1898 .