18 Questions
What process is involved in linking monomers together to form a polymer?
Polymerization
What type of polymer is synthesized by scientists?
Synthetic polymers
What type of polymer is prepared from alkenes through addition reactions?
Addition polymers
How are polymer formulas typically written?
By enclosing the repeating unit within brackets, followed by the letter n
What is the name of the polymer commonly known as Teflon?
Polytetrafluoroethylene
What is the term for polymers synthesized by cells?
Biopolymers
What is the characteristic of polymer chains in crystalline regions?
Highly ordered
What is the effect of substituents or branches on the density of a polymer?
It reduces the density
What is the characteristic of thermoplastic polymers?
They have both crystalline and amorphous regions
What is the reason why thermosetting polymers cannot be remelted?
Because of their covalent cross-links
What is the characteristic of elastomers?
They are flexible and can be stretched
What happens to thermoplastic polymers when they are heated?
They become softer and can be molded
What is the characteristic of a chain-growth process?
Monomers add one-by-one to the same end of a growing chain
What type of polymerization is associated with step growth?
Condensation polymerization
What is the name given to regions of a polymer where the chains are highly ordered with respect to one another?
Crystallites
What is the primary force that holds individual chains of a polymer together?
Van der Waals forces
What is the characteristic of a cross-linked polymer?
It has covalently bonded linking units between chains
What is the term for polymers of intermediate length formed during step growth?
Oligomers
Learn about the basics of polymers, including their definition, polymerization process, and IUPAC rules for naming polymers. Explore the alternative source-based system and how to write polymer formulas.
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