JAMB - Chemistry (2000 - No. 3)
Which of the following compounds is composed of Al, Si, O and H?
Epsom salt
Limestone
Clay
Urea
Selitys
The chemical formula for aluminum silicate is Al₂SiO₅. It's also sometimes written as Al₂O₃·SiO₂ because silicates are often complex.
Aluminum silicate is a mixture of aluminum, silica, and oxygen. It can be a mineral or combined with water to form a clay.