Description : What's the difference between spontaneity and impulsion?
Last Answer : Spontaneity allows for freedom to do as one chooses at the drop of a hat. It could be a considered choice, or not. I think of impulsiveness (which I think is the form of the word you’re talking about) as doing what one chooses without considering the consequenses.
Description : How does the Gibbs free energy predict spontaneity?
Last Answer : If G is negative, then the answer is spontaneous