Course Introduction This course covers the sections of Topic 5: Separate Chemistry 1 called Dynamic Equilibrium.  This is examined on Paper 1 of the GCSE Edexcel Chemistry Course. The following information, included in this course, is examined at Higher Tier only: Le Chatalier's Principle How, in industrial reactions, including the Haber process, conditions used are related to: The availability and cost of raw materials and energy supplies The control of temperature, pressure and catalyst used produce an acceptable yield in an acceptable time