Draw the structures of the polymers and uses.
(i) Polystyrene
(ii) PVC

Answer

### Step-by-Step Solution

#### (i) Polystyrene

1. **Identify the Monomer**: The monomer for polystyrene is styrene, which has the chemical formula C6H5CH=CH2.

2. **Draw the Structure of Styrene**:
- Start with the benzene ring (C6H5).
- Attach a vinyl group (CH=CH2) to the benzene ring.
- The structure looks like this:
```
C6H5
|
C
|
CH2
```
- This represents the styrene monomer.

3. **Draw the Polymer Structure**:
- Polystyrene is formed by the polymerization of styrene units.
- The repeating unit can be represented as:
```
-[C6H5-CH=CH2]-
```
- This indicates that the double bond in styrene opens up during polymerization, forming long chains.

4. **List the Uses of Polystyrene**:
- Insulator
- Wrapping material
- Soft drink and baby feeding bottles
- Plastic toys
- Bodies of telephones, radios, and televisions

#### (ii) PVC (Polyvinyl Chloride)

1. **Identify the Monomer**: The monomer for PVC is vinyl chloride, which has the chemical formula CH2=CHCl.

2. **Draw the Structure of Vinyl Chloride**:
- The structure consists of a vinyl group (CH=CH) with a chlorine atom attached to one of the carbon atoms.
- The structure looks like this:
```
CH2
|
C
|
Cl
```

3. **Draw the Polymer Structure**:
- PVC is formed by the polymerization of vinyl chloride units.
- The repeating unit can be represented as:
```
-[CH2-CHCl]-
```
- This indicates that the double bond in vinyl chloride opens up during polymerization, forming long chains.

4. **List the Uses of PVC**:
- Raincoats
- Handbags
- Shower curtains
- Vinyl flooring
- Water pipes