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Contributions of chemistry to society
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Chemistry is about the things we need and use in our daily lives-air,water,food,clothing,medicine,dwelling,telecommunication,transportation,fuel,eav.
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Plastics and other polymers.there are naturally occurring and sxnthetically manufactured polymerr.important natural polymers include proteins and carbohydrates.proteins,minus water,comprise about 50% of the bodies of animals.likewise,carbohydrates in the form of cellulose make up the woody structure of plants.carbohydrates include sugars,glycogen,starches,dextrin,and gums. The l0ng use of natural polymers since 3500 years ago is seen in woven lines found in tobs in egypt.linens come from the fibers of the stem of flax plant.shellac,a resin obtained fr0m the lac insect.is an0ther example of natural polymer.in addition,finger/toenails,h0rn and tusks,hair,fur,wo0l.feathers,silk and leather are polymers. |
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