Types of Chemical Reactions
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Synthesis Reaction
Definition: A reaction in which two or more substances react to form a single substance.
Equation: A + B -> AB
Examples: H2 + O2 -> H2O
Decomposition Reaction
Definition: The opposite of a synthesis reaction. A reaction in which a compound breaks down into two or more simpler substances.
Equation: AB-> A+B
Examples: NaCl-> Na + Cl
Single Replacement Reaction
Definition: Is a reaction in which one element takes the place of another element in a compound.
Equation: A + BC -> B + AC
Examples: F2 + NaCl -> Cl2 + NaF
Double Replacement Reaction
Definition: Is one in which two different compounds exchange positive ions and form two different new compounds.
Equation: AB + CD -> CB + AD
Examples: H2SO4 + NaCl -> Na2S04 + HCl
Combustion Reaction
Definition: Is one in which a substance reacts rapidly with oxygen, often producing heat and light.
Equation: CH + O2 -> CO2 + H2O
Examples: CH4 + 2 O2 -> CO2 + H2O