Addition and Decomposition Reactions Practice Test

$\small HCl + H_{2}O \rightarrow H_{3}O^{+} + Cl^{-}$

$\small CH_{4} + O_{2} \rightarrow CO_{2} + H_{2}O + heat$

$\small 2Cu(NO_{3}){2} \rightarrow 2CuO + 4NO{2} + O_{2}$

$\small 2NaCl + 2H_{2}O \rightarrow 2NaOH + H_{2} + Cl_{2}$