Oxygen was first discovered by Swedish pharmacist Carl Wilhelm Scheele in 1772 by heating mercuric oxide and nitrate salts.
(But don't try this at home: both very toxic experiments).
Also there was a main quarrel about the 'first' claim between Priestly (VIII-1774) and Lavoisier (1774, later) and Scheele (letter in IX-1774, but found after his death)
A scientist who studies chemicals is called a chemist. Chemists examine the properties, composition, and behavior of substances at the molecular and atomic levels. They play a crucial role in areas such as pharmaceuticals, materials science, and environmental protection.
When water splits, hydrogen gas and oxygen gas are formed.
It turns dark green and lets of oxegeon decreasing the mass
The modern periodic law was proposed by the Russian chemist Dmitri Mendeleev in 1869. He arranged the elements in order of increasing atomic mass and grouped them based on similar chemical properties, leading to the development of the periodic table.
Reduction reactions or deoxygenation reactions are processes in which oxygen is removed from a molecule or compound.
German chemist Andreas Sigismund Marggraf is normally given credit for discovering pure metallic zinc in 1746
Karl Wilhem is given credit for discovering simple machines
Gilbert N. Lewis was given the credit for discovering how a covalent bond works.
J. J. Thompson was given credit for discovering the first electron.
Darwin.
J.J. Thomson
Captain James Cook.
they didn't document it
no one is given the credit of discovering maths
christopher Columbus and leif ericson
Amerigo Vespucci is given the credit for discovering America.
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