What you will find in this set of slides is an introduction to physical properties of matter. Note that there is a break in the flow of the presentation as slides six through ten explain what mixtures are and how they can be separated. In addition, although there are explanatory pages for characteristics of liquids and solids, no attention is given to gases. Rearrange and break this presentation into two different lessons: properties of matter and separating mixtures. Make sure to also add a slide about the characteristics of gases.