$C+O_{2} to$ $\rightarrow$$to^{2}$ $CO_{2}$
$4P+$ $5O_{2}$ $\rightarrow$ $to$ $2P_{2}$ $O_{5}$
$2H_{2}+$ $O_{2}$ $to$ $\rightarrow$$to$ $2H_{2}O$
$4Al+$$3O_{2}$ $to$ $\rightarrow$ $to$$2Al_{2}$ $O_{3}$
$-CO_{2}$ : khí cacbonic
$-P_{2}$$O_{5}$ : photpho pentaoxit
$-$ $H_{2}O$ : nước
$-$ $AI_{2}$$O_{3}$ : nhôm oxit.