In 1766 this English chemist discovered the properties of hydrogen, which he called "inflammable air"
He also observed 
Cavendish's experiments of inflammable air and he decided ... John Dalton (
1766-1844) was an English meteorologist who decided to pursue chemistry 
when ... called atoms, 2) the atoms of an element has unique characteristics and 
weight,... [DOC] [TLE] Henry Cavendish Biography - life, history, son, information, born, time [PAR] The English physicist and chemist Henry Cavendish determined the value of the 
... studies, and is credited with the discovery of hydrogen and the composition of 
water.