States of Matter activities, worksheets, definition cards and posters. The unit deals with the three States of Matter: solid, liquid, and gas. Definition posters are also included for light terms such as ā³solid, āliquid, āļøgas, ā¾matter, āļøfreezing, āmelting, particles, āØļøevaporation, condensation, and collection. It also contains a sorting activity for sorting different pictures of objects as either solids, liquids, or gases. āWorksheets are included with āanswer keys.See the digital version her