A solid is a nearly incompressible state of matter with a well-defined shape, because the units (atoms, molecules, or ions) making up the solid are in close contact and in fixed positions. In this lesson, we will look at the different kinds of solids and their basic properties. Blending the IB and AP curriculums with respect to this topic creates a hodge podge of concepts. In order to avoid confusion, I will take each learning objective one at a time. This topic is more qualitative in nature, so I strongly suggest making flash cards for this content. (in chemistry)