Atomic Theory

EARLY ATOMIC THEORIES 1. Democritus - describe members as little gravely balls or invisible little compact sphere nuclear number 18 in motion continually in empty space. He named these particles atoms, the indivisibles. 2. Empedocles- affirmed that there are quaternity fundamental unchangeable instalments: earth, fire, water and station. These elements unify temporarily to work out matter. 3. Aristotle- was cardinal 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 besides 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 principal(a) element; Anaximenes believed that air is the old 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 th eory of matter was ground 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 either other element. 6. The atom is the smallest part of an element that can wear part in a chemic reaction. 7.

Atoms combine in ratios of small only numbers to form different chemic compounds. ( lawfulness of Definite Proportion) 8. Atoms are neither created nor destroyed in any chemical reaction. ( righteousness of double Proportion) The Law of Conserv ation of great deal states that in a chemic! al reaction, the total mass of the reactant is touch on to the total mass of the products. The Law of Definite/Constant report card states that: A given chemical compound always wait 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 spate of the other...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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