5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods 101-piece teacher-grade molecular model set

101-piece teacher-grade molecular model set with 51 atoms and 50 bonds covering carbon

Turning the hand crank walks students through every stage of the 2-stroke gasoline firing cycle on a 14-inch model

this polished hardwood funnel stand holds two 1

Metal spouting cylinder with multiple outlet holes at different heights

5-Material Equal Mass Density Set (Aluminum, Brass, Nylon, Acrylic, PVC) Metal Labware_Metal Bases & Rods 101-piece teacher-grade molecular model setEqual mass density set in aluminum, brass, nylon, acrylic, and PVC, the shared mass isolating volume and density as the distinguishing variables across metals and polymers.