The Lord has determined the laws of nature and the kinds of particles that can exist so that our universe has the right properties for life. Biology is possible because of chemistry, which is possible because of physics: the elementary particles God created and the rules governing them. A slight change in the properties of particles or the laws they obey, and atoms could not exist and biological life would be impossible. The intelligence needed to construct the right particles and laws such that biological life can exist is far beyond the combined mental capacity of all people who have ever lived. Quantum particles give us a bit of insight into the infinite mind of the Lord.
In the core of every atom is a nucleus consisting of one or more protons, and (except for hydrogen) some neutrons as well. Protons and neutrons are responsible for most of the mass of an atom. The electrons “orbit” around this central nucleus, generally in equal numbers to the protons, which makes the overall atom electrically neutral. Electrons are elementary – meaning they are not made of any smaller particles. But protons and neutrons are composite particles; they are made of smaller particles called quarks.