Question

cao + h₂o → ca(oh)₂
synthesis
decomposition
single displacement
double displacement
combustion

Explanation:

• Synthesis reaction: A synthesis reaction is a type of reaction in which two or more reactants combine to form a single product. In the given reaction \(CaO + H_2O

ightarrow Ca(OH)_2\), two reactants (\(CaO\) and \(H_2O\)) combine to form one product (\(Ca(OH)_2\)).

• Decomposition reaction: A decomposition reaction is a reaction in which a single reactant breaks down into two or more products. This is not the case here as we have two reactants combining.
• Single displacement reaction: In a single displacement reaction, one element replaces another element in a compound. There is no such replacement occurring in the given reaction.
• Double displacement reaction: In a double displacement reaction, the positive and negative ions of two ionic compounds exchange places. This reaction does not follow that pattern.
• Combustion reaction: A combustion reaction is a reaction in which a substance reacts with oxygen, usually with the release of heat and light. There is no oxygen involved in this reaction in the way characteristic of combustion.

Answer:

Synthesis