Chemical reactions are events caused by God, brought into existence in their moment, having a predetermined course through time, based on their inherent properties. As frames of reference, structured in the form of a past-present-future, we can insert ourselves mentally into any point along the trajectory of an event through time and space. That’s how we came up with the big bang theory. It proposes that atoms had a beginning, composed of what God had previously created, that we can imagine as an orange plasma.
Randomness plays a supposrting role in the creation of things in themselves. It is a feature of what things do based on their inherent properties, freed from any external ordering principle. There is random degradation of the genome, in spite of built-in protective mechanisms, as there is of our bodies in time. Biological evolution, in spite of what true believers hold to be true is not a fact. It is a story; and the story is that random mutations occur is responsible for the greater complexity we find in living forms. As was stated earlier, there exist epigenetic factors, meaning that DNA is the holder of data utilized by the cell in its functioning, and influences outside the cell act on those processes to direct development, growth and reproduction. An order is placed on living forms, from the top, the soul, down, to the atomic and subatomic levels of our being. Any element of that whole, acting randomly, outside that order, will cause disorder. The original version of the kind of living being that does demenstrate diversity through successive generations, was created, and it did not come about through the random activity of matter, which constitutes the building blocks of life.
Everything that exists in itself, is also a part of a greater whole. We are individual beings, broken within ourselves and among one another in what would be the mystical body of Christ. Animals and plants are components in their larger ecosystem to which they contribute and in turn are supported by. If a living being does not fit within the larger system, it dies. It may not be able absorb and transform matter (oxygen, water and nutrients) that is external to itself, into its bodily form. It may not be able to procreate. In any event that genetic lineage dies off. This is hardly a creative process.