Question

F. Differentiate between the following pairs.
1. Monomer and polymer
2. Fibres and plastics
3. Thermoplastics and thermosetting plastics
G. Define in one sentence.
1. Polymer
2. PET
3. Biodegradable
4. Recycle
5. Synthetic fibres​

Answer 1

Answer:

Differentiate between the following pairs.

1) Monomers and polymers

All monomers have the capacity to form chemical bonds to at least two other monomer molecules. Polymers are a class of synthetic substances composed of multiples of simpler units called monomers. Polymers are chains with an unspecified number of monomeric units.

2)Fibres and plastics

Materials used to make synthetic fibers can be used to make plastics, but not all materials used in making plastics can be used for synthetic fibers. Most fibers are made from compounds that form long polymer strands, e.g., nylon and dacron. ... A plastic is generally a synthetic polymer that can be melt processed.

3) Thermoplastic and thermosetting plastic

The primary difference between the two is that Thermoset is a material that strengthens when heated, but cannot be remolded or heated after the initial forming, while thermoplastics can be reheated, remolded, and cooled as necessary without causing any chemical changes.

Define in one sentence.

1) Polymer

A polymer is a chemical compound with molecules bonded together in long, repeating chains. Because of their structure, polymers have unique properties that can be tailored for different uses.

2)PET

PET (also abbreviated PETE) is short for polyethylene terephthalate, the chemical name for polyester. PET is a clear, strong, and lightweight plastic that is widely used for packaging foods and beverages, especially convenience-sized soft drinks, juices and water.

3) Biodegradable

Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi.

4)Recycle

Recycling is the process of converting waste materials into new materials and objects.

5) Synthetic fibres

Synthetic fiber or synthetic fibre are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms.