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He believed that elements were made up of little particles called "Atomas", or indestructible particles. Image from-www.arktimes.com
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He was the first practical alchemist and was known as the "father of chemistry. He developed an early experimental method for chemistry and isolated numerous acids including hydrochloric acid. Image from-www.ilmoamal.org
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He published The Sceptical Chymist, a treatise on the distinction between chemistry and alchemy. It contained some of the earliest modern ideas of atoms, molecules, and chemical reaction, and marked the beginning of the history of modern chemistry. Image from-www.crystalinks.com
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He discovered hydrogen as a colouless, odourless, gas that was combustibleand can explode with a mixture of air. Image from-www.nndb.com
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He proposed the law of definite proportions, which states that elements always combine in small, whole number ratios to form compounds. Image from-en.wikipedia.org
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He said that Democritus's belief of Atomas was right. Image from-en.wikipedia.org
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He said that different atoms combine in fixed proportions and later came up with molecules. Image from-onsager.bd.psu.edu
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He formulated the periodic law, created his own version of the periodic table and used ti to correct properties of known elements and predict undiscovered elements. Image from-www.nndb.com
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He determined the exact number of molecules in a mole, which was later named Avogadro's number. Image from-www.ecured.cu
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He contrubuted justification from physical laws and chemical concept of the atomic number. Image from-ja.wikipedia.org
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He discovered that some metals like uranium emitted radiation. Image from-en.wikipedia.org
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They discovered radium which was radioactive. Image from-www.forbes.com
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He made the Thompson Model which depicted the atom as a cookie dough dotted with chocolate chips. Image from-en.wikipedia.org
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He came up with E=mc2 which meant that energy equaled mass multiplied by the speed of light multiplied by itself. Image from-www.biography.com
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He concluded that the atom is mostly empty space and came up with the Rutherford model. Image from-www.nobelprize.org
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Niels Bohr, a physicist, and his student James Chadwick conclude that the nucleus contains positive protons and neutral neutrons, Image from-en.wikipedia.org
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He suggested that the periodic table could be explained if the elcetrons in an atom were connected or clustered in some manner. Image from-en.wikipedia.org
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He found the wave structure of matter specifically electrons. Image from-mwolff.tripod.com
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Wolfgang's Pauli exclusion principle along with quantum mechanics helped create the Electron Cloud of Probability. Image from-en.wikipedia.org
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He contributed to the scientific method & metaphysics. Image from-mrsvesseymathematicians.wikispaces.com
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