CH 21 - experimetnal design and separation techniques - CAIE iGCSE Chemistry '23-25 syllabus

I'm a high school chemistry teacher with a doctorate in organic chemistry. Iv'e been teaching chemistry for a number of years for the international syllabus and put a great deal of time and effort into myy ppts to make them a close companion to the textbooks being used. The ppts range from anywhere between 20 and 150 slides depending on the topic, and are incredibly detailed.