trecex1
Active Member
- Joined
- Mar 19, 2016
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- HSC
- 2017
Re: HSC Chemistry Marathon 2017
And that biopolymer question really is not hard when you have access to the internet while constructing a response.
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New question (5 marks)
The following extract was taken from a blog about environmental issues.
"...the use of long-lasting for short lived applications can cause problems for the preservation of living systems..Plastic debris has a costly impact on waste management for municipalities."
Assess the use of polystyrene and a named biopolymer in terms of their properties, with references to the statements made in this blog.
You would get maybe 3 marks max for that response.The process of forming polymers is known as polymerization where there are two types: addition and condensation. Addition polymers are formed by chemically joining many monomers together without any by-product. The double bonds are broken to allow the addition of more monomers. Condensation polymers on the other hand are when polymerization occurs with many natural polymers (e.g. Cellulose, Starch, wool, silk, hair...). Condensation polymers form when monomers chemically combine by eliminating a small molecule (usually water)
I can't really be bothered providing a diagram atm soz
Question:
Describe how ONE named biopolymer is made AND explain its usefulness in term of it properties. (5 MARKS)
And that biopolymer question really is not hard when you have access to the internet while constructing a response.
_______________________________________________________________________________________________
New question (5 marks)
The following extract was taken from a blog about environmental issues.
"...the use of long-lasting for short lived applications can cause problems for the preservation of living systems..Plastic debris has a costly impact on waste management for municipalities."
Assess the use of polystyrene and a named biopolymer in terms of their properties, with references to the statements made in this blog.