Liquid and solid water. Ice, like all solids, has a well-defined structure; each water molecule is surrounded by four neighboring H₂Os. two of these are hydrogen-bonded to the oxygen atom on the central H₂O molecule, and each of the two hydrogen atoms is similarly bonded to another neighboring H₂O

Tetrahedral means "four-sided". In chemistry we interpret this in our imaginations. If we do a similar arrangement of water, putting oxygen in the center, and using the two hydrogens and two lone pairs at the corners, we also come up with a tetrahedral arrangement. However, there is one important difference - the bond angles for water are not 109.5. Because of the presence of the very negative lone pair electrons, the two hydrogens are squeezed together as the two lone pairs try to get away from each other as far as possible. The resulting angle gives water a 104.5 bond angle. Because we don't "see" the electrons, the resulting tetrahedron "looks" BENT!

this means its it could lend itself well to the multipurpose idea I'm gong for.