Science Double Award - 4SD0 PearsonEdexcel

Alkanes

Akopọ

Alkanes are the simplest family of hydrocarbons and the main components of crude oil fractions. Their single carbon-carbon bonds make them relatively unreactive, but under the right conditions they undergo substitution reactions with halogens.

In this lesson you will learn the general formula for alkanes, why they are called saturated hydrocarbons, how to draw structural and displayed formulae for the first five members, and what happens when alkanes meet halogens in ultraviolet light.

Awọn Afojusun

  1. Know the general formula for alkanes
  2. Explain why alkanes are classified as saturated hydrocarbons
  3. Understand how to draw the structural and displayed formulae for alkanes with up to five carbon atoms
  4. Describe the reactions of alkanes with halogens in the presence of ultraviolet radiation

Akọ̀wé Ẹ̀kọ́

Every fuel you burn and every plastic you touch starts with hydrocarbons. Alkanes are the simplest family, and understanding their structure explains why crude oil fractions behave the way they do. They are generally unreactive, which is exactly what makes them good fuels but poor raw materials without cracking.

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Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Alkanes. 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. The general formula for alkanes is: A) CnH2n B) CnH2n+2 C) CnH2n-2 D) CnHn+2 Answer: B
  2. Which of the following is a saturated hydrocarbon? A) Ethene B) Propene C) Butane D) Butene Answer: C
  3. Methane reacts with bromine in UV light. This is an example of: A) Addition B) Combustion C) Substitution D) Decomposition Answer: C
  4. How many hydrogen atoms are in pentane? A) 10 B) 12 C) 14 D) 8 Answer: B
  5. What condition is needed for alkanes to react with halogens? A) Heat B) A catalyst C) Ultraviolet light D) High pressure 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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Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

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 Alkanes? 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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