Alkenes

This video begins by preparing ethene from ethanol and then reacting it with bromine in bromine water. Later, it moves on to consider the mechanism of the reaction - electrophilic addition. The main aim to help you learn to trace the movement of electrons in the 2-step mechanism and to learn to present the mechanism using so-called "curly arrows". Note that while ethene is reacted with bromine water at the start of the video - the mechanism looks at the reaction between ethene and pure bromine!

This video looks at the nomenclature of the first 3 alkenes and at the 3-dimensional shapes of their molecules.