Assumes the shape and volume of its container particles can move past one another. Most of the observable characteristics of chemical systems with which we are familiar represent bulk properties of matter ie the properties associated with a collection of a large number of atoms ions or molecules. Solid Shapes For Kids Shapes Kindergarten Teaching Shapes Solid Shapes The term delta comes from the upper-case Greek letter delta Δ which is shaped like a triangle. . Heat or energy is needed. Describe shape attributes in their own language. It contains relatively densely packed molecules. 3D Shapes I Know new pyramid versionThis version includes only ONE chorus at a time whereas the old version used to do 2 at a time. Retains a fixed volume and shape rigid - particles locked into place. Assumes the shape of the part of the container which it occupies particles can moveslide past one another. Solid vibrate jiggle...