There are 70 calories in 1 shot 30 ml of Whiskey. Calorie Breakdown: 0% fat, 100% carbs, 0% prot.
A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been pressed into a tiny space. This compression can take place at the end of a star's life. Some black holes are a result of dying stars.
So there's your answer-- the neutron star becomes a black hole when the neutrons go highly relativistic. Now, before I stop there, you should notice two things I did not mention: the mass of the neutron star, and the Pauli exclusion principle. As mentioned above, those are both going to be important, in a related way.