Write the reaction equations in full and abbreviated ionic form: SiO2 → K2SiO3 → H2SiO3 → SiO2

Si + O2 = SiO2
SiO2 + K2O = K2SiO3
K2SiO3 + 2 HCl = H2SiO3 + 2 KCl
H2SiO3 = H2O + SiO2
SiO2 + 2 NaOH = Na2SiO3 + H2O
The first reaction takes place between silicon and oxygen, resulting in the formation of silicon oxide.

The second reaction occurs between silicon oxide and potassium oxide, resulting in the formation of potassium metasilicate.

The third reaction is potassium metasilicate decomposing into water and silicon oxide.

The fourth reaction is the interaction of silicon oxide and sodium oxide to form water and sodium metasilicate.