Chemical calculations account for 25% of available examination maks in Advanced Higher Chemistry (as offered by the Scottish Qualifications Authority) & the first part of this book explains background theory as well as worked examples & problems (with answers provided) to give valuable practice in this area of the examination. The second part of the book deals with the twelve Prescribed Practical Activities (PPAs) in the syllabus. Each piece of experimental work is described briefly & clearly but with all key aspects of theory & technique fully explained. Study questions (including calculations with numerical answers proided) are included to help students understand this work both in execution & in revison for the examination.