H₂O → H₂ + O₂
is a decomposition reaction
Explanation:
In a synthesis reaction two elements are combined to form another compound. A + B → AB
In a decomposition reaction a compound is split into simpler substances.
AB → A + B
In a combustion reaction a chemical substance (usually organic substances) are reacted with oxygen to form the most stable oxides and heat.
CH₄ + 2 O₂ → CO₂ + 2 H₂O
In a double displacement reaction two compounds exchange elements.
AB + CD → AC + BD
In a single displacement reaction a compound exchange one of its elements.
AB + C → AC + B
Learn more about:
types of chemical reactions
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