This document discusses ionic and molecular compounds. Ionic compounds dissolve in water to form ions, while molecular compounds do not dissociate into ions in water. Examples of ionic compounds given are NaCl and KCl, while examples of molecular compounds provided are CCl4 and HCl. The document then examines the properties of ionic and molecular compounds, noting that ionic compounds melt at higher temperatures than molecular compounds and that ionic compounds conduct electricity when dissolved in water, unlike molecular compounds. Finally, the document reviews what was learned about ionic compounds, molecular compounds, and the differences between their properties.