Silicon differ from silica by a group of__________________?
Correct answer: A. Ch3
- A. Ch3
- B. OH
- C. OCH3
- D. O2
Explanation
The intended comparison is between silicone and silica: silicone polymers contain repeating Si-O units with organic groups such as CH3 attached to silicon, whereas silica is an SiO2 network. Students may choose OH because silanol groups occur in silicone chemistry, but the characteristic group distinguishing silicone structures is methyl, CH3.
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About Reactions of Group IV Elements
Group IV, or Group 14, chemistry covers the trends from carbon and silicon to tin and lead, including their reactions with oxygen, halogens, water, acids and alkalis. It also examines the structures and properties of their oxides and chlorides, oxidation states, and the inert pair effect, rather than treating all members as equally metallic.
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