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Oxygen
Joseph Priestly independently discovered oxygen in 1774 -
Oxygen
In 1774 Joseph Priestley independently discovered oxygen. -
Atoms combine into molecules
Avogadro discovered that the atoms in elements combine to form molecules. Equal volume of gases under equal conditions of temp and pressure contain equal numbers of molecules. -
Atoms Combine into Molecules
Avogadro discovered that the atoms in elements combine to form molecules. Equal volume of gases under equal conditions of temperature and pressure contain equal numbers of molecules. -
Electricity Transforms Chemicals
Davy discovered the power of electricity batteries which led to the discovery of much more. -
Synthesis of Urea
First discovered in human urine by H.M. Rouelle in 1773. First organic compound to be synthesized from inorganic starting materials. -
Synthesis of Urea
Synthesized by Fredrich Wohler in 1828 and first organic compound to be synthesized from inorganic starting materials. -
Chemical Structure
Developed by August Kekulé, Archibald Scott Cooper, and many others around 1858 -
Plastics
In the 1860s a way to exploit the long stringy molecules of celulose found naturally in plants was discovered and created the first plastic -
Periodic Table of Elements
Arranged by atomic mass and families and groups -
Radioactivity
The discovery of Radioactivity has led to the use of X-rays -
Electrons
Discovered by JJ Thompson in 1897 when he was studying the properties of the cathode ray -
Atomic Theory
Dalton discovered ultimate weight which became to be know as the atomic theory -
Atomic Theory
Dalton discovered ultimate weight which became to be known as the atomic theory
