4-Piece Specific Gravity Cubes Set with Hooks Material_Muslin Ninety-five-piece molecular model set with

Ninety-five-piece molecular model set with 53 atoms and 42 links spanning organic and inorganic chemistry

Tirrill burner on a stable octagonal base adds air

and measuring powders and granules

Built from two counter-rotating foil-sectored plates with a belt drive and a pair of Leyden-jar condensers

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

4-Piece Specific Gravity Cubes Set with Hooks Material_Muslin Ninety-five-piece molecular model set withFour cube specific gravity set in brass, iron, aluminum, and zinc, each 20mm on edge with a top hook for suspending in water during Archimedes principle and buoyancy experiments.