[DOC] [TLE] Henry Cavendish - Wikipedia [PAR] Henry Cavendish FRS was a British natural philosopher, scientist, and an 
important experimental and theoretical chemist and physicist. Cavendish is noted 
for his discovery of hydrogen or what he called "inflammable air". He described 
the density of inflammable air, which formed water on ... His experiment to 
measure the density of the Earth has come to be known as... [DOC] [TLE] Henry Cavendish - Chemistry Encyclopedia - water, gas, name, mass [PAR] English chemist and physicist Henry Cavendish, who discovered hydrogen. ... 
and description of the properties of hydrogen and its status as a constituent 
element in water. ... He called this gas "inflammable air" (known today as 
hydrogen). [DOC] [TLE] Henry Cavendish - Today In Science History [PAR] Cavendish, although he wrote much, printed fewer pages than Priestley did ... in 
constructing big telescopes, with one of which he has just discovered a new 
planet. ..... the gas known as nitric oxide comes in contact with air, the oxygen in 
the air .... the inflammable hydrogen, the lightest substance knownthe other, 
oxygen,... [DOC] [TLE] What did Henry Cavendish contribute to science? | Reference.com [PAR] Henry Cavendish made a significant contribution to chemistry by discovering that 
hydrogen ... How did Henry Cavendish discover hydrogen? ... In 1766, Henry 
Cavendish found that hydrogen, which he called flammable air, was an element 
in air. ... composition of the gases found in air now known as nitrogen and oxygen
. [DOC] [TLE] Hydrogen - Chemicool [PAR] It was discovered in 1766 by Henry Cavendish. ... He described hydrogen as 
inflammable air from metals and established that it was the same material (by its
... [DOC] [TLE] Investigator of Hydrogen - Henry Cavendish | Legacies Rememebered [PAR] Mar 5, 2015 ... Henry Cavendish made many contributions to physical science, the most ... He 
also experimented with atmospheric gases and studied what he called 
inflammable air. ... This conclusively demonstrated that water was not an element 
as ... Cavendish discovered that hydrogen was the lightest known gas,... [DOC] [TLE] Joseph Priestley, Discoverer of Oxygen National Historic Chemical ... [PAR] When Joseph Priestley discovered oxygen in 1774, he answered age-old ... 
Scientists now recognize 92 naturally occurring elements-including nitrogen and 
... In 1754, Joseph Black identified what he called "fixed air" (now known to be ... 
In 1766, a wealthy eccentric named Henry Cavendish produced the highly 
flammable... [DOC] [TLE] Hydrogenthe essentials [WebElements Periodic Table] [PAR] It is by far the most abundant element in the universe and makes up about about 
90% ... Hydrogen was discovered by Henry Cavendish in 1766 at London, 
England. ... he collected it over mercury and described it as "inflammable air from 
metals". .... The Hydrogen isotope H-2, also known as deuterium, is used in a 
variety of... [DOC] [TLE] 1. Hydrogenium (Hydrogen) - Elementymology & Elements Multidict [PAR] Henry Cavendish (1731-1810) collected the gas over Mercury, subjected it to 
systematic ... He made no claim to having discovered Hydrogen, but he was the 
first to ... from other gases by the descriptive term "inflammable air from the metals
". ... Because there were at Harkins' time 91 elements known, and some of them 
with... [DOC] [TLE] hydrogen (H) | chemical element | Britannica.com [PAR] The earliest known important chemical property of hydrogen is that it burns with ... 
is the most abundant element in the Galaxy (10 times as abundant as helium, ... 
In 1766 Henry Cavendish, English chemist and physicist, showed that hydrogen, 
then called flammable air, phlogiston, or the flammable principle, was distinct... [DOC] [TLE] Hydrogen Element Facts - Anderson School District Five [PAR] Discovered: The first recorded instance of hydrogen made by human action was 
in ... Hydrogen was first recognized as a distinct element by Henry Cavendish in 
1766, ... He described hydrogen as "inflammable air from metals" and 
established that it .... The ordinary isotope of hydrogen, H, is known as Protium, 
the other two... [DOC] [TLE] Chemistry - Ray Sahelian

Question: When Henry Cavendish discovered this lightest-known element, he called it inflammable air
Answer: Hydrogen