To give your students access to this page you will need to change the default access from "OFF" to "ON".The purpose of this exercise is to get students to think critically about what they read.The following extract is taken from a very well-respected British chemistry textbook for 16–19 year olds (specifically: G. Hill and J. Holman, Chemistry in Context, 5th edn, Nelson, 2000). It introduces the topic of ionic bonding...