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Types of Chemical Reactions

This guide explores the five main types of chemical reactions, including synthesis, decomposition, single displacement, double displacement, and combustion. Synthesis reactions involve combining elements to form a compound (e.g., Mg + O2 → MgO). Decomposition reactions break down compounds into simpler substances (e.g., KClO3 → KCl + O2). Displacement reactions see one element replace another (e.g., Mg + HCl → H2 + MgCl2), while combustion reactions involve a hydrocarbon reacting with oxygen, producing CO2 and H2O (e.g., CH4 + O2 → CO2 + H2O).

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Types of Chemical Reactions

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  1. Types of Chemical Reactions

  2. Synthesis • Synthesis: to join together A + B  AB Mg + O2  MgO H2 + O2  H2O

  3. Decomposition • Decomposition: to break apart A B  A + B KClO3  KCl + O2 H2O2  H2O + O2

  4. Single Displacement • Single Displacement: when one element replaces one other element A + BC  B + AC Mg + HCl  H2 + MgCl2

  5. Double Displacement • Double Displacement: when two elements switch places AB + CD  CB + AD KI + CuNO3  CuI2 + KNO3

  6. Combustion • Combustion: When a Carbon based compound (hydrocarbon) combines with Oxygen to make CO2 and H2O CH4 + O2 CO2 + H2O

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