15. Which force is responsible for all of chemistry, the structure of atoms, and all light? 16. A few years ago, a particle called the Boson was discovered at the CERN particle accelerator in Switzerland. This particle helped show that the Electroweak force could become a part of the Strong force at high temperatures. 17. The total modern story of the atom is called the Model of the atom. 18.One of the major quests of modern physics is GUT. What does GUT stand for? 19. It is believed that at very high temperatures and energies, like those found early in the universe all forces were combined as one. Over time, as the universe cooled, separate forces crystalized out. The theory that explains all of the forces of the universe is called the Theory of