Frank Scullion United Kingdom Learning of Chemistry through a growing bank of several hundred video lessons. The work of a grammar school teacher with over 30 years experience, it makes extensive use of animations and graphical illustrations to help students grasp the concepts more easily. Questions are frequently dissected and students helped to develop strategies to cope with the most challenging problems. You will be impressed by the wide use of creative eLearning software and the in-depth coverage of topics. All of the UK Chemistry Specifications are being used to select the topics and it is hoped that GCE will be completed by 2017.
Haloalkanes 5. Rate of hydrolysis shown & explained.
This video both demonstrates and explains the factors that control the rate of hydrolysis of haloalkanes. 1-chlorobutane should be more reactive than 1-iodobutane, on the basis that the C-Cl bond is more polar than the C-I bond - thus attracting the nucleophile better. However, 1-iodobutane would be expected to react faster on the basis that the C-I bond is weaker than the C-Cl bond, thus lowering the activation energy of the reaction. This video identifies which of the two factors has the greater influence on the rate.
Haloalkanes1c: 26 isomers of C6H13Br
One in a series of videos on haloalkanes (alkyl halides), it looks at the structures and names of the 26 isomers of bromohexane (C6H13Br). That includes both structural and optical isomers.
Haloalkanes 1b: 11 isomers of C5H11Br
One in a series of videos on haloalkanes (alkyl halides), it looks at the structures and names of the 11 isomers of bromopentane (C5H11Br). That includes both structural and optical isomers.
How carbon bonds in alkanes, alkenes and benzene.
This video takes a fairly in-depth look at the formation of sigma and pi bonds in carbon compounds. It addresses both sp3 and sp2 hybridisation, using them to explain the shapes and stabilities of the molecules involved: methane, ethene and benzene.
Advanced Chemistry of Alcohols in under an hour.
This video, in under an hour, provides a comprehensive lecture on the chemistry of alcohols. It looks at all the key reactions: oxidation, chlorination, nucleophilic substitution, esterification and dehydration It also looks at the reaction with sodium and at the use of the iodoform reaction to test for alcohols with the structure CH3CH(OH)R. Also suitable for revising specific units as might be required.