In work book question no. 15 do n't understand
Different forms of silica such as quartz, tridymite and cristobalite are as follows: Quartz 870∘C⟶ Tridymite 1470∘C⇌ Cristobalite
(SiO2) (SiO2) (SiO2)
The structure possessed in them is:
Why Ca(OH2) + CO2 👉 CaCO3 + H2O?
Shape of CO2& SiO2 respectively are