Find phosphorus on the periodic table. If a lab wanted to turn phosphorus into a semiconductor, it would have to: Select one:
a. remove an electron
b. remove a proton
c. add a proton
d. add an electron
e. make it an isotope

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.