Page 30 - Genius Kidz Prudence Learning Sc-8

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Synthetic Material and Plastic

Natural fibres comprise of organic material. Examples of these fibres include cotton, jute, wool, fur and leather. But
some fibres are also man-made like rayon, polyester, nylon, etc. They are prepared by using crude petroleum oil, coal,
natural gas, air, water, etc. Besides these fibres other synthetic or man- made material around us include plastic, rubber,
medicines, etc.

Discussion

Jack : Suzi! My shirt has a Suzi : Yes ! Of course Jack …..
component of oil in it is synthetic.
it…… Can you believe it?

Jack : Syn…… what?? Suzi : Oh ho ! It is man-

made.

Jack : Oh ! Suzi…. I know that Suzi : Boy….. Read the
…… after all my clothes chapter otherwise I will
are man-made…. My not talk to you
tailor stiched these for anymore…. You and
me. your queries.

POLYMERS are linked to each other so as to form up
“Polymer” the word meaning “poly” i.e. many polymer chain. Examples of natural polymers
and “mer” i.e. unit. So, we can say “polymer is include tar, shellac, tortoise shell, tree saps

a macromolecule composed of many which serve as a source of amber and latex.
repeating units”. The repeating units of a Commonly used natural polymers are cotton,
polymer are called “monomers”. Monomers celluloid and gum, etc.

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