Please enable JavaScript.
Coggle requires JavaScript to display documents.
Periodic Table - Coggle Diagram
Periodic Table
In 1669 amateur alchemist Hennig Brand attempted to create a Philosopher’s Stone but instead was the first discovery of phosphorus.
In 1680 Robert Boyle also discovered phosphorus, becoming public.
In 1809 approximately 47 elements were discovered, and scientists began to see patterns in the characteristics.
In 1863 English chemist John Newlands
divided the then discovered 56
elements into 11 groups, based
on characteristics.
In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, he knew more were to come so he left empty spaces.
In 1886 French physicist Antoine Becquerel first discovered radioactivity. Ernest Rutherford named three types of radiation; alpha, beta and gamma rays. Marie and Pierre Curie started working on the radiation of uranium and thorium, and subsequently discovered radium and polonium. They discovered that beta particles were negatively charged.
- 1 more item...
Titanium
JUN 15, 1791
Titanium was discovered
JUN 15, 1793
Titanium was independently discovered
JUN 15, 1910
First pure metallic titanium
JUN 15, 1925
Titanium of very high purity was made
JUN 15, 1932
Titanium metal used outside the laboratory for first time
FEB 11, 1957
1st titanium mill opened
AUG 6, 1959
Titanium used in warfare.
2001 – Titanium heart
- 1 more item...
-