Chemistry and physics occurring during planet formation determine the initial state of a planet and its subsequent evolution. While chemistry and physics are universal, the outcomes of these processes for planets in different planetary systems is sure to produce surprising results. In this talk, I will discuss a few of the many processes that models suggest should be commonly experienced by most growing rocky planets (e.g. impacts, magma oceans, partitioning of volatiles between interior and surface), how they have influenced the formation and evolution of Venus, Earth, and Mars, and how they may differ in exoplanetary systems. Presented by Laura Schaefer, Stanford University.