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Single displacement reaction

Bob Jones PPT Notes -- Chapter 8d

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Types of Reactions Types of Reactions There are four types of reactions. Synthesis Decomposition Single replacement Double replacement Occurs when two substances unite Synthesis A + B AB Synthesis 2 Mg + O2 2 MgO magnesium(element) oxygen(element) magnesium oxide(compound) 4 Occurs when a substance splits into parts Decomposition AB A + B Decomposition hydrogen(element) oxygen(element) water(compound) 2 H2O 2 H2 + O2 6 Occurs when a more active substance replaces one part of a compound that is less active Single Replacement Y X + X Y Z Z + Single Replacement hydrogen(element) potassiumhydroxide(compound) water(compound) potassium(element) 2 K + 2 H2O H2 + 2 KOH 8 These reactions are also called displacement or substitution reactions. Single Replacement

Types of Chem. Reactions

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Types of chemical reactions A chemical reaction is a process that is usually characterized by a chemical change in which the starting materials (reactants) are different from the products. Chemical reactions tend to involve the motion of electrons, leading to the formation and breaking of chemical bonds. There are several different types of chemical reactions and more than one way of classifying them. Here are some common reaction types: Synthesis Reaction (Direct Combination) In a synthesis reaction two or more chemical species combine to form a more complex product. O + H2 ? H2O C + O2 CO2 Chemical Decomposition (Analysis Reaction) In a decomposition reaction a compound is broken into smaller chemical species. H2O ? H2 + O CO2 C + O2
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