The density creates heat that causes subatomic elements to fuse together to form simple atoms such as hydrogen and helium, sending matter exploding into space. Local gravity wells condense large masses of hydrogen, until it begins to fuse into helium, creating suns exploding outward into space. Increasing heat from the suns allow heavy metals to form and planets are born. Variable randomizing influences causes diversity of forms to appear upon earth called autocatalytic sets that could metabolized and reproduce, thus life was born. But the emptiness of space pulls apart bonded matter towards randomized homogeneous equilibriums.
Heat can also break apart gravity and as such is an important factor in uniform randomization.
Water is also a powerful solvent which causes chemical bonds to break apart and equalize as a solution. Fission, the breaking apart of molecules, however, can be caused without heat. The process of freezing fractures and randomizes. When the sun dies, the earth's core will cool until there is no more lava to patch the cracks and earth will fracture into smaller pieces. Gravity, however, will become more powerful as the universe cools and matter fragments into the fine layer of energy predicted by randomization.