09 Oct
Posted by: sean in: Chemistry Notes & Tips
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More O Level Chemistry Exam-based questions on Organic Chemistry / Macromolecule / Polymer:
Question:
Fat and Terylene are:
A) Natural polymers
B) Polyamides
C) Polyesters
D) Synthetic polymers
Try it out!
PS: Leave your suggested answers in the “Comments” section below.
Rgds,
Sean
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3 Responses
LinwooD
10|Oct|2007 1polyester.. answer is C i think.
because fat contains ester and terylene as well i guess. not really sure about it. hmm.
A, natural polymers (terylene is not)
hence, Acannot be the answer.
B, Polyamides are for protein and nylon,thus B cannot be the answer.
D, Synthetic Polymers, this is obviously a no-no because fat is not synthetic.
correct me if im wrong yea, thanks.
Reply
lijun(:
10|Oct|2007 2fats and terylene are polyesters.
cos they contain the ester linkage, which is the -COO- bond.
fats are natural polyesters, while terylene is a synthetic polyester. hence, from this information, it is clear that only C(polyester) is the suitable answer.
Reply
Sean Chua
10|Oct|2007 3Well Done. Fats are made up of 3 molecules of fatty acids and 1 molecule of glycerol (an alcohol that has 3 OH hydroxy functional group). As such, it forms 3 ester linkages.
I dont have to esplain Terylene. It should be covered in school textbooks. Do let me know if you need any clarification.
Rgds
Sean
SimpleChemConcepts
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