The Chemistry Tutor: Learning by Example DVD Series provides an introduction to chemistry through step-by-step example problems. Emphasis is placed on giving students confidence in their skills by gradual repetition so that the skills learned are committed to long term memory. This episode covers ions and ionic charge. Students will learn what an ion is and how it relates to a neutral atom, as well as how to calculate the ionic charge on an atom with practical examples. Grades 9-Adult. 34 minutes on DVD.