1.4 - Polymers Flashcards
Compare and contrast between a monomer and a polymer of an organic molecule with examples.
- A monomer is a molecule from which a polymer is made
- A polymer is a large molecule formed by combining many repeating structural units (monomers).
For example, ethane (also called ethylene) is a monomer that is used to make the polymer polyethylene.
List 5 properties of polymers that cause them to be widely used.
1) They are easy to synthesize
2 They are easy to mold into different shapes or to draw into thin fibers
3) They are chemically resistant
4) Some are very hard, rigid, and durable
5) Some are heat resistant
Define polymerization reactions?
A reaction in which monomer units are bonded together by covalent bonds to form a polymer.
Describe addition polymerization?
In addition polymerization, unsaturated monomers react to form a polymer
Addition polymerization occurs when all the atoms present in the monomers are retained in the polymer product.
Use chemical equation to describe the addition polymerization reactions for the preparation of polyethylene (PE).
The answer is on page 21 of the instructional guide.
Use chemical equation to describe the addition polymerization reactions for the preparation of polypropylene (PP).
The answer is on page 21 of the instructional guide
Use chemical equation to describe the addition polymerization reactions for the preparation of polyvinyl chloride (PVC).
The answer is on page 21 of the instructional guide
Use chemical equation to describe the addition polymerization reactions for the preparation of polystyrene (PS).
The answer is on page 21 of the instructional guide
Identify the monomer, polymer, and uses of addition polymers (Ethene).
Monomer: Ethene Polymer: Polyethylene Uses of Polyethylene: - Plastic shopping bags - Plastic bottles
Identify the monomer, polymer, and uses of addition polymers (Propene).
Monomer: Propene Polymer: Polypropylene Uses of Polyethylene: - Glues - Carpets - High-performance outdoor clothing
Identify the monomer, polymer, and uses of addition polymers (Vinyl chloride or chloroethene).
Monomer: Vinyl chloride or chloroethene Polymer: Polyvinyl chloride Uses of Polyethylene: - Plumbing pipes - Rainwear - Garden hoses
Identify the monomer, polymer, and uses of addition polymers (Styrene).
Monomer: Styrene Polymer: Polystyrene Uses of Polyethylene: - Foam packing - Disposable food containers - CD cases
Define condensation polymerization?
In condensation polymerization, monomers with at least two functional groups combine with the loss of a small molecule such as water.
Condensation polymerization requires that there be _____ functional groups on each monomer molecule.
Two
Use chemical equation to describe the condensation polymerization reactions for the preparation of a polyester.
Polyesters are synthetic fibers made from an organic acid that has two −COOH groups and an alcohol that has two −OH groups joined by ester bonds.
