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Oxygen
Oxygen was dicovered by placing mercury in a tube and heating it to release oxygen -
Period: to
Chemistry
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Electricity Transforms Chemicals
By performing an experiment by mixing pot ash and electricity the chemical were separated -
Atomic theory
Atomic thoery was discovered by John Dalton he found the atom -
Atoms Combined into Molecules
When gases were combined the volume was higher than expected which made chemist beleive gas have more than one atom called molecules -
Sythesis of Urea
Bybplace two inorganic substances together they discovered that it can form an organic compond -
Atoms have signiture of light
Robert busen figure out many substance change coloron a flame also discovered sodium on the sun -
Plastics
1860 the first plastic was made using plants -
Periodic Table of Elements
Demitir Meedelev arranged the elements by atomic mass forming a chart -
Radioactivity
An experiment was done by placing uranium on a paper and putting an object and the outline was left -
The electrons
Joseph Thompson discovered electrons -
Chemical Structure
A diagram for combining atoms together was made to find chemical structures -
Electrons form Chemical Bonds
Gilbert Lewis explaned that electron are in shells -
Fullernes
Its is a stable carbon structure containing 60 atoms in a ball ot capsule formation
