Question

identify the type of reaction for the chemical equation: caco₃ → cao + co₂
double replacement
single replacement
synthesis
decomposition

Explanation:

To identify the reaction type, analyze the equation \( \text{CaCO}_3
ightarrow \text{CaO} + \text{CO}_2 \). A decomposition reaction involves a single compound breaking down into two or more simpler substances. Here, calcium carbonate (\( \text{CaCO}_3 \)) breaks into calcium oxide (\( \text{CaO} \)) and carbon dioxide (\( \text{CO}_2 \)), matching decomposition. Double replacement involves two compounds swapping ions, single replacement has one element replacing another in a compound, and synthesis combines substances into one—none fit here.

Answer:

Decomposition (the option labeled "Decomposition")