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Oxygen
Joseph Priestley descibes oxygen's role in respiration and combustion. He also invnts carbonated water by dissolving fixed air in water. Although he calls it ""dephlogisticated air". http://othmerlibrary.com picture: http://etc.usf.edu -
The Law of Conservation of Matter
Antoine Laurent Lavoisier discovered that matter cannot be created of destroyed, it only changes form. http://www.chemteam.info picture: <enochs10.edu.glogster.com> -
Dalton's Atomic Theory
John Dalton comes up with his atomic theory. His Atomic Theory stated that elements are composed of tiny particles called atoms. It also states that all atoms of an element are identical. <http://dl.clackamas.edu/ch104-04/dalton's.htm>
picture:http://chemistryiseasy.com/ -
Spectrometer
Was first invented by a German chemist, Robert Wilhelm Bunsen. Defracts light through a solution to test its absorbancy. http://www.answerbag.com/_view/2394736 picture: http://www.doitpoms.ac.uk -
Periodic Table
The periodic table is presented by Dmitri Mendeleev. He presented the elements based on increasing atomic weights to the Russian Chemical Society. It was changed to organize the elements in atomic number. http://chemistry.about.com
picture:<http://www.google.com/imgres?q=periodic+table+of+elements&hl=en&safe=active&biw=1366&bih=587&gbv=2&tbm=isch&tbnid=JsfFP8TdgDCmFM:&imgrefurl=http://www.ptable.com/&docid=dOfeZddtTjcy2M&imgurl=http://www.ptable.com/Images/periodic%252520table.png&w=1440&h=10 -
Thomson's atomic model
His model was the atom as a sphere, positive matter with elctrons surrounding it. He attampted to estimate te number of electrons by using beta and gamma rays. http://www.chemheritage.org picture: http://www.kentchemistry.com -
The Discovery of the pH scale
Soren P L. Sorenson found a new way to measure the acidity of a particular solution. He proposed the pH scale as a way to categorize acids and bases. http://www.corrosion-club.com picture: http://www.longhairdontcare.net -
Rutherford's planetary model of the atom
He composed the planetary model of te atom, all the protons were in the nucleus and the elctrons circleds around it. <http:// www.iun.edu>
picture:http://web.neo.edu -
Bohr Model
This model was proposed by Niels Bohr. It has become th symbo for atomic energy, it shows the protons and neutrons in the nucleus as a ball with the electrons traveling in specific orbits. picture and info:http://csep10.phys.utk.edu
