Science Double Award - 4SD0 PearsonEdexcel

Synthetic Polymers

Akopọ

Plastics are everywhere - packaging, clothing, electronics, medical equipment. Almost all of them are synthetic polymers, giant molecules built by joining thousands of small monomer molecules together.

In this lesson you will learn what monomers and polymers are, how addition polymerisation works, how to draw repeat units from monomers and vice versa, and the environmental problems that come from disposing of these incredibly durable materials.

Awọn Afojusun

  1. Know that an addition polymer is formed by joining up many small molecules called monomers
  2. Understand how to draw the repeat unit of an addition polymer
  3. Understand how to deduce the structure of a monomer from the repeat unit of an addition polymer and vice versa
  4. Explain problems in the disposal of addition polymers, including their inertness and the production of toxic gases when burned

Akọ̀wé Ẹ̀kọ́

A plastic bag, a drinks bottle, a smartphone case - each is made from a polymer. The word polymer means 'many parts', and that is exactly what these molecules are: long chains built from thousands of identical small molecules called monomers.

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Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Synthetic Polymers. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  1. Addition polymerisation requires a monomer with: A) A single bond B) A double bond C) A triple bond D) No carbon Answer: B
  2. What happens to the C=C bond during addition polymerisation? A) It becomes a triple bond B) It stays as a double bond C) It opens to a single bond D) It breaks completely Answer: C
  3. The monomer of polyethene is: A) Methane B) Ethane C) Ethene D) Propene Answer: C
  4. A major problem with disposing of addition polymers is: A) They dissolve in water B) They are biodegradable C) They are non-biodegradable D) They react with air Answer: C
  5. Burning PVC can produce: A) Oxygen B) Nitrogen C) Hydrogen chloride D) Sodium chloride Answer: C

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
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O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe

Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Synthetic Polymers? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.

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