Materials chemistry: Identify the main chemical constituent of common clay minerals. Clay (e.g., kaolinite) is composed primarily of alumino-silicates with water of crystallization. Choose the most appropriate constituent.

Q: Materials chemistry: Identify the main chemical constituent of common clay minerals. Clay (e.g., kaolinite) is composed primarily of alumino-silicates with water of crystallization. Choose the most appropriate constituent.

Concept Common clays such as kaolinite have composition approximated by Al2O3·2SiO2·2H2O (hydrated aluminium silicate). Final Answer Hydrated aluminium silicate.

Difficulty: Easy

Calcium carbonate
Hydrated aluminium silicate
Magnesium oxide
Ferric oxide

Correct Answer: Hydrated aluminium silicate

Explanation:

Concept

Common clays such as kaolinite have composition approximated by Al₂O₃·2SiO₂·2H₂O (hydrated aluminium silicate).

Final Answer
Hydrated aluminium silicate.

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