I achieved a high A* Grade in my final A-Level exams using these notes!!!
I believe you can achieve an A* if you can memorise these notes! Simply use blurting, a method of active recall, to write everything you remember from the notes, then identify the parts you couldn’t remember, then repeat ...
Alkenes CnH2n
unsaturated hydrocarbon
C=C double covalent bond: high electron density = more reactive than alkanes
o Sigma: single bond – lies on axis between 2 nuclei
o Pi: second bond – electron clouds above+below plane of molecules
more susceptible to electrophile attack – break in addition reactions
o electrons further from nuclei – slightly weaker bond
o outside: more accessible than sigma bonds
1. Electrophilic addition
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