Chemical Kinetics theory

Chemical Kinetics   Chemical Kinetics studies the speed of chemical processes and determines the factors which influence on it. It aims is to find mathematical expression that relates the speed of a chemical reaction with […]

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Van der Waals Forces

Van der Waals Forces theory   Van der Waals forces, although they don’t form a chemical bond theirselves, they are responsible for the attraction between neutral and saturated molecules, which result in the condensed states […]

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Periodic System Theory

Periodic System   The current Periodic System is based on the one which was proposed by Mendeleiev with the inherent corrections to Moseley’s law, as it is said, used as sort order atomic number. It […]

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Hydrogen Bond Theory

Hydrogen Bond   Many hydrogenated compounds have properties some abnormal that can be interpreted by assuming that amongst its molecules is formed a special type of link, characteristic of hydrogen atoms, called as Hydrogen Bond, […]

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Covalent Bond theory

Covalent Bond   Covalent Bond (nonmetal-nonmetal):   There are many molecules whose formation can not be explained by the ionic bond, the simplest cases are molecules which are composed of identical atoms, such as H2, […]

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Stoichiometry theory

Stoichiometry   Stoichiometry theory Lavoisier’s law of mass conservation: The total mass of the substances involved in chemical transformation remains constant and therefore the sum of the masses of the reactants must be equal to […]

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Chemical calculations theory. Dissolutions

Dissolutions   Dissolutions are homogeneous mixtures resulting from the interposition of atoms, molecules or ions from two or more substances, called components, which are involved in varying proportions.   WAYS TO EXPRESS THE CONCENTRATION OF […]

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Metallic bonding theory

Metallic bonding   Metallic bonding (metal-metal): This type of bond is given in all pure metals and most alloys.   In a metal, atoms are very close to each other forming what is called a […]

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Chemical calculations theory. States of matter aggregation.

States of matter aggregation   The matter is present in the nature in three different States of matter aggregation: solid, liquid and gas. Solids have fixed shape and volume. Liquids have fixed volume, but its […]

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Chemical calculations theory

Chemical calculations theory. Matter and its transformations.   Chemical calculations Mole concept: Mol is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kg of […]

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