Both isotonic and isosmotic refer to the strength of the solution,  for example, how much solute is dissolved in the solution. Isotonic  refers to the ionic strength of a soâ¦lution while isosmotic refers  to the number of molecules of solutes in a biological solution, for  example, sugar concentration.
The egg is strongest from point to point and easily crushable at the sides. Breaking an egg with steady equal pressure at each end of the egg is remarkably hard to do when considering the thin shell involved.
Best Answer: The sides are definitely the weakest; the shell is the thinnest at that point. Hold an egg between your thumb and forefingers. If you have one finger on top and one on bottom and you squeeze, the egg doesn't break (unless you're crazy strong).