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A chemical reaction is a process that results in the interconversion of chemical substances.The substance or substances initially involved in a chemical reaction are called reactants.Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions.

Reaksi kimia adalah transformasi/perubahan dalam struktur molekul. Reaksi ini bisa menghasilkan penggabungan molekul membentuk molekul yang lebih besar, pembelahan molekul menjadi dua atau lebih molekul yang lebih kecil, atau penataulangan atom-atom dalam molekul. Reaksi kimia selalu melibatkan terbentuk atau terputusnya ikatan kimia

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On the classical definition, therefore, there are only two types of chemical reaction: redox reactions and acid-base reactions. The former involve the motion of lone electrons and the latter of an electron pair.

Chemical reactions may be classified in different ways depending on the particular aspect considered for elaborating the division, or on the branch of Chemistry which the classification originates from. Some examples of widely used terms for describing common kinds of reactions are:

Isomerisation, in which a chemical compound undergoes a structural rearrangement without any change in its net atomic composition; see stereoisomerism

Direct combination or synthesis, in which two or more chemical elements or compounds unite to form a more complex product:

Chemical decomposition or analysis, in which a compound is decomposed into smaller compounds or elements:

Single displacement or substitution, characterized by an element being displaced out of a compound by a more reactive element:

Double displacement or coupling substitution, in which two compounds in aqueous solution (usually ionic) exchange elements or ions to form different compounds:

Combustion, in which any combustible substance combines with an oxidizing element, usually oxygen, to generate heat and form oxidized products. The term combustion is used usually only large-scale oxidation of whole molecules, i.e. a controlled oxidation of a single functional group is not combustion.

Soal Kimia

berikut adalah soal latihan kimia yang lebih di tekankan pada pemahaman terhadap reaksi kimia, meliputi entalphi, reaksi molar, enerigi ikatan dan panas pembakaran. soal dalam bahasa indonesia, dengan format dokumen berupa pdf.

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