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Functional Groups What is the family name?. alkanes 4 Only carbon and hydrogen 4 All single bonds CCH H H H H H Q: What should you call cyclic hydrocarbons.

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Presentation on theme: "Functional Groups What is the family name?. alkanes 4 Only carbon and hydrogen 4 All single bonds CCH H H H H H Q: What should you call cyclic hydrocarbons."— Presentation transcript:

1 Functional Groups What is the family name?

2 alkanes 4 Only carbon and hydrogen 4 All single bonds CCH H H H H H Q: What should you call cyclic hydrocarbons made up o of just single bonds? A: Cycloalkanes

3 alkenes 4 Only carbon and hydrogen 4 A carbon to carbon double bond CC HH H H Q: What should you call a molecule with two C=Cs? A: A diene

4 alcohols 4 Only one oxygen 4 Has an O-H group 4 Can classify as 1º/2º/3º according to position of O-H group on carbon skeleton C C HH H HH HO Q: Why are short-chain alcohols so soluble in water? A: They can form hydrogen bonds with H 2 O molecules

5 phenols 4 Only one oxygen 4 Has an O-H group 4 The O-H group is directly attached to a benzene ring HO Q: The C 6 H 5 - group has a special name. What is it? A: Phenyl

6 aldehydes 4 Only one oxygen 4 Has a C=O group 4 C=O group is at the end of carbon chain, so is next door to a hydrogen atom CC H H O H H Q: Aldehydes can be easily oxidised to form …? A: Carboxylic acids

7 ketones 4 Only one oxygen 4 Has a C=O group 4 C=O group is not at the end of carbon chain, so is next door to 2 carbons CC H H O H H C H H Q: Ketones cannot easily be oxidised. Why not? A: No hydrogen atom attached to the C=O group.

8 carboxylic acids 4 Has 2 oxygens 4 Has O-H and C=O groups on the same carbon atom 4 This -COOH group has to be at the end of a carbon chain (why?) CC H H O O H H Q: Write an equation showing how ethanoic acid can a act as a (weak) acid. A: CH 3 COOH(aq)CH 3 COO – (aq) + H + (aq)

9 esters 4 Has 2 oxygens 4 One oxygen is part of a C=O bond, the other is next door, sandwiched between two carbons CC H H O O H C H H H Q: This ester can be made by reacting ethanoic acid with a an alcohol. Name the alcohol, and name the ester. A: Alcohol = methanol; ester = methyl ethanoate

10 ethers 4 Has 1 oxygen 4 No O-H or C=O group 4 The oxygen is sandwiched between two carbon atoms CC H HO H CH H H H H Q: Why do ethers have much lower boiling points t than their isomeric alcohols? A: No hydrogen bonds between ether molecules (why?)

11 “What family…?” quiz Family names: 4 cycloalkane 4 alkene 4 primary (1º) alcohol 4 secondary (2º) alcohol 4 tertiary (3º) alcohol 4 phenol 4 aldehyde 4 ketone 4 carboxylic acid 4 ester 4 ether … are you ready? 5 …4 …3 …2 …1 … GO!

12 What family does it belong to? (1) CC HH H H

13 What family does it belong to? (2) CC H H O H H

14 What family does it belong to? (3) CC HO H HH HC H H H

15 What family does it belong to? (4) OC H H H

16 What family does it belong to? (5) HCOCH H H H H

17 What family does it belong to? (6) CC H H O O H C H H H

18 What family does it belong to? (7) CC H H O H H C H H

19 What family does it belong to? (8) HO

20 What family does it belong to? (9) CC H C O O H H H H H

21 What family does it belong to? (10) CC H H H HO CHH H C HH H

22 What family does it belong to? (11) CC H H H H H

23 Answers: “What family?” quiz (1) CC HH H H alkene

24 Answers: “What family?” quiz (2) CC H H O H H aldehyde

25 Answers: “What family?” quiz (3) secondary alcohol CC HO H HH HC H H H

26 Answers: “What family?” quiz (4) primary alcohol OC H H H

27 Answers: “What family?” quiz (5) ether HCOCH H H H H

28 Answers: “What family?” quiz (6) ester CC H H O O H C H H H

29 Answers: “What family?” quiz (7) ketone CC H H O H H C H H

30 Answers: “What family?” quiz (8) phenol HO

31 Answers: “What family?” quiz (9) carboxylic acid CC H C O O H H H H H

32 Answers: “What family?” quiz (10) tertiary alcohol CC H H H HO CHH H C HH H

33 Answers: “What family?” quiz (11) cycloalkane CC H H H H H

34 “Spot the functional groups” quiz Functional groups: 4 alkene 4 primary (1º) alcohol 4 secondary (2º) alcohol 4 tertiary (3º) alcohol 4 phenol 4 arene (NEW!) 4 aldehyde 4 ketone 4 carboxylic acid 4 ester 4 ether … are you ready? 5 …4 …3 …2 …1 … GO!

35 Spot both the functional groups (1) OH O phenol OH O carboxylic acid

36 Spot all three functional groups (2) OH O O O O O O carboxylic acid arene ester

37 Spot both the functional groups (3) O O OH O O phenol ester

38 OH Spot both the functional groups (4) OH primary alcohols secondary alcohol

39 Spot all three functional groups (5) OH O tertiary alcohol ketone alkene O

40 Spot all three functional groups (6) H O H O arene alkene aldehyde

41 Spot all three functional groups (7) OCH 3 OO ketone arene ether

42 Functional groups quiz: results Maximum score = 18 How did you do?


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