Atomic Theory

EARLY ATOMIC THEORIES 1. Democritus - describe members as little gravely 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 quadruple fundamental unchangeable instalments: earth, fire, water and station. These elements unify temporarily to tier matter. 3. Aristotle- was ace 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 too 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 old element; Anaximenes believed that air is the immemorial 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 w as base 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 each other element. 6. The atom is the smallest part of an element that can suck up part in a chemic reaction. 7.

Atoms combine in ratios of small only numbers to form different chemical compounds. ( lawfulness of Definite Proportion) 8. Atoms are neither created nor destroyed in any chemical reaction. (natural law of double Proportion) The Law of Conservation of atomic reactor sta tes that in a chemical reaction, the total m! ass of the reactant is bear on to the total mass of the products. The Law of Definite/Constant fundamental law states that: A given chemical compound always deport 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 mass of the other...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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