# Properties of Matter and Chemical Bonding ## expand\_more Under Construction... more to come! ### Measurement ### Two Scales Precision vs. Capacity \[S | t+ | ★★★\] Two weighing scales with different ranges and sensitivities, with video of pan and read-out to projection screen. ### Properties of Matter ### Samples of Elements \[M | t++ | ★★★★\] First day of Gen Chem: Metals and non-metals; solids, liquid and gas elements; compound of elements. \[[In-Depth Description](/presentations/samples-elements)\] ### Molecular Models \[S | t | ★★★\] Molecular models. We have them. We make them. In this case, long hydrocarbon, water, and C60. ### Atomic and Molecular Crystal Models \[M | t | ★★★\] Wooden, plastic, and Styrofoam models for show-n-tell. ### Contact Us **Mailing Address**: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138 **Campus Location**: Science Center B-08A | **Tel**: (617) 495-5824 | **Email**: