History of the Atom Timeline by Gabrielle Holivay and Gavin Guillory

Democritus believed that there had to be a basic building block that made up all other matter. Each single blue lego. Believed everything could be broken down into little pieces. He thought it looked like a marble. Jessa, Tega. "John Dalton’s Atomic Model." Universe Today RSS. N.p., 24 Aug. 2009. Web. 23 Feb. 2014. https://www.google.com/search?q=schrodinger+model&sa=X&tbm=isch&imgil=WwmPTFhBUnffcM%253A%253Bhttps%253A%252F%252Fencrypted-tbn3.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcSsxF

Aristotle didn't believe in the Atomic Theory. He had no proof of his discovery. He believed that all matter was made of "The Four Elements". Jessa, Tega. "John Dalton’s Atomic Model." Universe Today RSS. N.p., 24 Aug. 2009. Web. 23 Feb. 2014. http://t1.gstatic.com/images?q=tbn:ANd9GcS0SGCK7NAAWmRMRFpEVPI0vXMwW4gdCk6XrOKdzU41H8WfqDUn7g

Image SourceDalton discovered that elements are atoms with different masses and compounds are a combinations of elements.
All matter consits of tiny particles, Atoms are indestructables and unchangable, Elements grouped by mass of atoms, Elements react and combine.
Dalton's atom looked like billard balls; model was called "Billard Ball model"
"Dalton and Thomson's Atomic Models - Modern Atomic Theory." Dalton and Thomson's Atomic Models - Modern Atomic Theory. N.p., n.d. Web. 26 Feb. 2014.

Thomson discovered that the protons and neutrons are scattered around the atom. Thomson's model is called the Plum Pudding model because the electron and protons are unifomly mixed throughout the atom. "Dalton and Thomson's Atomic Models - Modern Atomic Theory." Dalton and Thomson's Atomic Models - Modern Atomic Theory. N.p., n.d. Web. 26 Feb. 2014. https://www.google.com/search?q=plum+pudding+model&source=lnms&tbm=isch&sa=X&ei=gwgWU7baJYPU2AWSg4DgBg&sqi=2&ved=0CAcQ_AUoAQ&biw=1366&bih=628#f

Rutherford conducted a gold foil experiment to determine the placement of the electrons. This experiment was contradictory to what was believed by Thomson, the electrons were in the nucleus. De Leon, Professor N. "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p., n.d. Web. 25 Feb. 2014. https://www.google.com/search?q=schrodinger+model&sa=X&tbm=isch&imgil=WwmPTFhBUnffcM%253A%253Bhttps%253A%252F%252Fencrypted-tbn3.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcSsxFXZUBczdkbQs69