Sunday, December 8, 2013

Atomic Theory

EARLY ATOMIC THEORIES 1. Democritus - describe members as little in earnest balls or invisible little compact sphere atomic number 18 in motion continually in empty space. He named these particles atoms, the indivisibles. 2. Empedocles- affirmed that there are quatern fundamental unchangeable instalments: earth, fire, water and station. These elements unify temporarily to miscellanea matter. 3. Aristotle- was bingle of the more believers of the four - element. He added that the elements change from one from to the other by adding or removing heat and moisture. He alike believed that love is the jam that unites the elements and strife is the force that disunites the elements. 4. Thales believed that water is the first element; Anaximenes believed that air is the special element; Heraclitus believed that fire is the primary element. In 1803, potty Dalton concluded that the properties of matter could be explained in terms of atoms. Daltons atomic theory of matter was found on the adjacent postulates: 1. All matter is made up of extremely small, long-lasting or indivisible particles called atom. 5. All atoms of a given element are identical, but they differ from those of both other element. 6. The atom is the smallest part of an element that can issuing part in a chemic reaction. 7.
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Atoms combine in ratios of small only numbers to form different chemical substance compounds. ( lawfulness of Definite Proportion) 8. Atoms are neither created nor destroyed in any chemical reaction. ( right of double Proportion) The Law of Conserva tion of grass states that in a chemical rea! ction, the total mass of the reactant is make up to the total mass of the products. The Law of Definite/Constant news report states that: A given chemical compound always pick out the same proportion by mass of its constituent elements. The Law of Multiple Proportions states that: When two elements combine to form two or more different compounds, if the fall of one element is constant, the citizenry of the other...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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