The oval surrounding their name was meant to protect them from evil spirits in life and after death. The cartouche has become a symbol representing good luck and protection from evil. Egyptians believed that one who had their name recorded somewhere would not disappear after death. A cartouche attached to a coffin satisfied this requirement.
A single mole can construct 200 mounds over the course of a winter. (Drawing by Jenifer Rees.) Moles construct two kinds of tunnels: surface tunnels and deep tunnels, or runways. Surface tunnels are located 1 to 4 inches below the surface.
Throughout this investigation you will estimate the rate of the reaction (how rapidly the solution bubbles) on a scale of 0-5 (0=no reaction, 1=slow,...., 5= very fast). Assume that the reaction in step 2 proceeded at a rate of 4 and record the speed in DATA TABLE 1, and DATA TABLE 2 as the rate at room temperature.