This book is part of a book series called Edexcel Gcse Science .

This book is aimed at children in secondary school.

This book was published 2011 by Pearson Education Limited .

Penny Johnson has been an engineer, a science teacher, and a full-time publisher of school textbooks. She is now a full-time freelance writer, consultant, and editor, who has co-written a number of science courses for use at home and in school. She lives in England. Chris Conoley, Mary Jones and David Sang are all experienced authors and examiners.