Synthetic Polymers
Gbogbo ọrọ náà
The plastic bag in your hand, the window frame in your classroom, the insulation around electrical wiring - all of these are synthetic polymers, giant molecules built by joining thousands of small monomer units end to end. Polymers have transformed modern life, but their durability creates serious disposal problems.
In this lesson you will learn how addition polymers form from alkene monomers, how to draw repeat units and work backwards to find the monomer, and why disposing of polymers is an environmental challenge.
Ebumnobi
- Know that an addition polymer is formed by joining up many small molecules called monomers
- Understand how to draw the repeat unit of the addition polymer poly(ethene)
- Understand how to deduce the structure of a monomer from the repeat unit of an addition polymer and vice versa
- Explain problems in the disposal of addition polymers, including their inertness and inability to biodegrade and the production of toxic gases when they are burned
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Synthetic Polymers. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- What type of bond must a monomer contain for addition polymerisation? A) A single bond B) A double bond C) An ionic bond D) A metallic bond Answer: B
- The monomer for poly(ethene) is: A) Methane B) Ethane C) Ethene D) Propene Answer: C
- Addition polymers are difficult to dispose of because they: A) Are very expensive B) Are non-biodegradable C) React with water D) Dissolve in soil Answer: B
- Burning PVC produces the toxic gas: A) Oxygen B) Nitrogen C) Hydrogen chloride D) Methane Answer: C
- During addition polymerisation, the C=C double bond: A) Stays the same B) Becomes a triple bond C) Opens to form single bonds D) Breaks completely Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Synthetic Polymers? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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