Solid, liquid or gas? These pocket chart cards make it easy and fun to learn about the properties of matter. Double-sided cards feature an image of a solid, liquid or gas on the front. Card backs indicate the item's name and a color-coded border for self-checking. Additional cards: Solid, Liquid, Gas, Changes in State of Matter and arrows for indicating changes in properties are also included to help with categorizing. Cards measure 2.5" high. For use with any of our tabletop or standard pocket charts.