The energy barriers for the two main types of this process differ by the multiplicative factor “2, minus 3 cosine theta, plus cosine cubed theta, all over 4.” The change in volume Gibbs free energy is inversely proportional to the critical radius for this process; (15[1])objects smaller than that radius fail to undergo this process (15[1])and are (15[1])called “embryos.” On a specific S-shaped graph of heat flux (15[1])vs temperature, the “transition” regime separates the “film” regime from a regime (10[1])named for this process. Because the (*) heterogeneous form of this (10[1])process is more (10[1])efficient, many “sites” for (10[1])this process are (-5[1])provided by (10[1])Teflon-coated calcium carbonate chips to facilitate calm boiling. (10[2])For 10 points, (10[1])name (10[1])this first (-5[1])step in (-5[1])the (10[1])formation (10[1])of a (10[2])new phase, (10[1])exemplified (10[2])by formation of bubbles in a heated (10[3])liquid. (10[1])■END■