The geometry of a cubic hole is described.
http://www.chm.davidson.edu/ChemistryApplets/Crystals/IonicSolids/CubicHole.html
All materials have characteristic densities. As long as the materials do not mix or react, the less dense materials will float on top of the more dense ones.
http://www2.ncsu.edu/ncsu/pams/science_house/learn/CountertopChem/exp16.html
Spaghetti is denser than water and, therefore, sinks when placed in water.
http://www2.ncsu.edu/ncsu/pams/science_house/learn/CountertopChem/exp1.html
To illustrate a consequence of the different densities of warm and cool water
http://129.93.84.115/Chemistry/DoChem/DoChem004.html
To illustrate a consequence of the difference in density between two liquids
http://129.93.84.115/Chemistry/DoChem/DoChem002.html
To illustrate that electrical conductivities vary among liquids.
http://129.93.84.115/Chemistry/DoChem/DoChem062.html
To provide evidence that matter is composed of charged particles.
http://129.93.84.115/Chemistry/DoChem/DoChem025.html
To determine the empirical formula of a hydrated compound.
http://www.hsh.k12.nf.ca/chem/3202l/empericalformula1.htm
The geometry of the face-centered cubic unit cell is described
http://www.chm.davidson.edu/ChemistryApplets/Crystals/UnitCells/ccp.html
The purpose of this activity is to illustrate some of the reactions of sulfur.
http://www.woodrow.org/teachers/chemistry/institutes/1986/exp13.html