1 2 CH3 -0-($₁-0). -Si- CH3 CH 3 n 4 CH3 3 HO-Si-O 5 CH3 CH3 -Si-OH

Chemistry
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Chapter1: Chemical Foundations
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Below is a molecular structure for silicone. Match the correct hybridization to each atom labeled below.

(note: each oxygen has 2 lone pairs of electrons on them that aren't shown in the picture below)

 

The image depicts the chemical structure of a polydimethylsiloxane (PDMS) molecule, a type of silicone. Here's a detailed explanation:

1. **Chemical Structure**: 
   - The backbone consists of repeating units of silicon (Si) and oxygen (O) atoms. 
   - The silicon atoms are bonded to two methyl groups (CH₃).

2. **Diagram Components**:
   - **Si-O-Si Linkage**: The backbone is composed of silicon and oxygen atoms linked alternately, forming a repeating chain.
   - **Methyl Groups (CH₃)**: Each silicon atom is bonded to two methyl groups. These groups are represented as:
     - Above the silicon atoms: CH₃
     - Below the silicon atoms: CH₃
   - **Hydroxyl Groups (OH)**: Present at both ends of the chain, bonded to silicon atoms. These groups are represented as HO- and -OH.

3. **Repeating Unit Indication**:
   - The curved brackets and subscript "n" denote that the section inside the brackets is a repeating unit and can occur multiple times, indicating PDMS is a polymer with a variable length chain based on the number of repeating units (n).

This molecular structure allows PDMS to be highly flexible, making it useful in various applications such as sealants, lubricants, and medical devices.
Transcribed Image Text:The image depicts the chemical structure of a polydimethylsiloxane (PDMS) molecule, a type of silicone. Here's a detailed explanation: 1. **Chemical Structure**: - The backbone consists of repeating units of silicon (Si) and oxygen (O) atoms. - The silicon atoms are bonded to two methyl groups (CH₃). 2. **Diagram Components**: - **Si-O-Si Linkage**: The backbone is composed of silicon and oxygen atoms linked alternately, forming a repeating chain. - **Methyl Groups (CH₃)**: Each silicon atom is bonded to two methyl groups. These groups are represented as: - Above the silicon atoms: CH₃ - Below the silicon atoms: CH₃ - **Hydroxyl Groups (OH)**: Present at both ends of the chain, bonded to silicon atoms. These groups are represented as HO- and -OH. 3. **Repeating Unit Indication**: - The curved brackets and subscript "n" denote that the section inside the brackets is a repeating unit and can occur multiple times, indicating PDMS is a polymer with a variable length chain based on the number of repeating units (n). This molecular structure allows PDMS to be highly flexible, making it useful in various applications such as sealants, lubricants, and medical devices.
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