Course Introduction: This course covers 1.4: Bonding and 1.5: Solid Structures from the Eduqas/WJEC AS Level Chemistry Course. An understanding of bonding is fundamental in explaining why chemical reactions happen. 1.4 considers the electronic changes that take place in the formation of stable structures. 1.5  relates the structures and properties of different types of solids to the bonding present within them. This information is assessed on Paper 1 of both Eduqas and WJEC As Level Chemistry Course.