Which of the compounds is composed of Al Si O a... - JAMB Chemistry 2018 Question
Which of the compounds is composed of Al, Si, O and H?
A
Epson salt
B
Limestone
C
Clay
D
Urea
correct option: c
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Between the five main minerals found in clay, kaolinite is the most common. Kaolinite holds the chemical composition Al2Si2O5(OH)4 and is an aluminum silicate material with a low “shrink-swell” capacity. It is a soft, white mineral but is often colored orange or red by iron oxide found in the soil
Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces.
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