zacCooneyTimlinechem1

Small Spherical Solid Indivisible model- It was what the scientists thought an atom was, very simple and just a round ball shape.Dalton's idea.(wikipedia.com) Electron Cloud Model- Models where electrons arent on a fixed orbit, dont know exactly where they are.(wikipedia.com)From Shrodinger and Heisenberg. Plum Pudding Model- Rutherford said the electrons were like the plums and the rest of the mass was the pudding.Made by Thomson.(wikipedia.com)

Rutherford Bohr Model-Small positive charged nucleus surrounded by the electrons.made by rutherford.wiki.com Planetary Model- Model has very compact middle positive charge and electrons floating around it. Made by Rutherford.

wiki

__**450 AD and before**__ __**Thales of Mileteus**__- Thales was a Greek astronomer, mathmatician, and philosopher. One of Thales' greatest feats was that he predicted the solar eclipse on May 28th, 585BC. He lived in Greece from the years 624BC-560BC.(wiki)

wikispaces.com


 * __Leucippus__**- Leuciuppus was the teacher of Democratus. He is the one who introduced the idea of the atom to him. Without Leucippus maybe Democratus would never have made up his laws and maybe science wouldnt be what we know it to be today. We have much to thank Leucippus for in the science community. He lived in Greece from 490BC-?B(wiki)

wikispaces.com


 * __Democratus__**- Democratus was the one who made the theory of atoms, saying that everything was made ofe atoms and that they were indistructable and that there was an infinante amount of atoms that had different sizes and shapes and weight. He was the pupil of Leucippus and learned a lot from him about the atom. He lived from 460BC-370BC. Also he was born in Abdera, Thrace, Greece.(wiki)

(nndb.com)wikispaces.com

__**450AD-1700AD**__ __**Walter Warner**__- Walter Wanrer was a scientist who was born in 1563 and he made great discoveries including in 1646 when he made discoveries in universae geometrea. He died in 1653.(wiki.com)

[|www.findagrave.com]


 * __Iassac Newton__**- In 1687 Newton's most famous work was published. It was called Philosophiae Naturalis Principia Mathematica. It described universal gravatation and the three laws of motion. He lived from 1642-1727 and was born in England.

wikispaces.com

__**Robert Boyle**__- Robert Boyles is best known for his law that he made up. The law was called Boyles Law. He is also one of the earliest pioneers for what all chemists use and that would be the practice of the scientific method. Boyle is considered one of the founders of modern chemistry. Boyle lived from the years 1627-1727 and was born and raised in Ireland.-wiki

-www.chemteam.info

[|www.answers.com]wikispaces.com
 * __1700-1800__**
 * __Antoine Levaiser__**- Levasier made contributions to the atomic theory, his input on the atomic theory was the law of conservation of mass. He proved that during a chemical reaction matter of an element can not be created or destroyed. Levaiser was born in France and lived from 1743-1794.-wiki
 * __Joseph Priestly-__** Joseph Prestly's biggest discovery was the discovery that he made of oxygen in 1774. He was an Engish born scientist but later in life he was sent over to America. He lived in America as an Englishman during the heating up of the American Revolution. He must have been tormented and hated by his neighbors and must have made it difficult for him to work on his science projects with a bunch of unruly Americans knocking on his door.-wiki

-wikiwikispaces.com


 * __1800-1875__**
 * __John Dalton-__** In 1800 Dalton came out with his atomic theory and was half right with it which was spectacular when you look at the time he was in and what technology he had to work with. He lived from september 6th 1776 to july 27th 1844. He was from England and his death was caused by several strokes, which would lead to his death.-wiki.com

WIKI.COMwikispaces.com


 * __Charles Darwin-__** Charles Darwin was a scientists who worked on the theory of evolution and he made up Darwinism. His greatest work was published in 1859 and was called __On the Origin of Species.__ He was from England and he lived from 1809-1882.-wiki.com

-wiki.com

__**Amadeo Avagadro-**__ He proposed avagadros hypothesis in 1811. It says that the same temurature and pressure are the volumes of gases containing equal numbers of molecules and atoms, also known as avagadros number. He lived from 1776-1856-wiki 6.022x10^23 -wikispaces

__**1875-1900-**__ -wikispaces.com
 * __Wilhelm C Roentgan-__** In 1895 roentgan discovered x-rays. He discovered this with an expirement of taking an electron current passing threw a low pressure gas. He is a scientist from Germany and lived from 1845-1923. He died of cancer in the liver.-nobleprizes.org

__**Henry Bequerel-**__ He was a scientist who collaberated with the Curies and shared a Nobel Prize with them in 1903. They got this prize for their work in spontaneous radioctivity. He was a french scientist who lived from 1852-1908.-wiki.com

-wikispaces.comwikispaces.com

__**JJ Thomson-**__ He won the nobel prize in 1906 for his discovery of the electron. This was a huge discovery in the development of the atomic structure and all the theories that went with it.. He is from England and lived from 1856-1940.-wiki.com

both from wikispaces.com

__**1900-1915-**__

wikispaces.com
 * __Marie Curie-__** In 1903 she, curie, won the nobel prize with her study of radiation. In 1911 she won again with her discovery of radium and pollonium. She was a woman working in a male dominated feild of science. Lived from 1867-1934. She died from the radiation because it gave her cancer, she died for her work.-wiki.com

-wikispaces.com
 * __Millikan-__** In 1910 Millikan discovered that the electron was in fact negatively charged! He proved this by his wonderful expiriment whihc he called the "MILLIKAN DROP EXPIRIMENT" He lived from 1868-1953. He is a us citizen.-wiki.com

wikispaces.com

__**Ernest Rutherford-**__ In 1911 he discoverd That protons have a positive charge. He did this using his famous gold foil expirement. He lived from 1871-1937. He was a smart English man.wiki.com wikispaces.com wikispaces.com

__**1915-1950-**__ __**Neils Bohr-**__ Won The Nobel Prize in 1922 for his investigations in the structure of atoms. Lived from 1885-1962. He was born in Denmark. wikispaces wikispaces

__**James Chadwick-**__ Chadwick made the discovery of nuetrons and that they had a nuetral charge. He lived from 1891-1974. He was from England.-nobelprize.com wikispaces.com wikispaces.com

__**Werner Heisenberg-**__He was a German born scientist who made discoveries in quantum physics and made the uncertainty princeaple of quantum theory. He won the nobel prize in 1932 for the creation of quantum mecanics. He lived from 1901-1976. He died of kidney cancer. His and shrodingers equations made up what we know about quantums. wikispaces.com

__**Erwin Shrodinger-**__ His most famous discovery was the shrodinger equation. He lived from 1887-1961 and was from australia.