The subatomic scale refers to the size of particles that are smaller than atoms, including protons, neutrons, and electrons. These particles are the building blocks of matter and play a crucial role in the structure and behavior of atoms. Understanding the subatomic scale is essential for fields like quantum physics and chemistry, as it helps explain how atoms interact and form molecules. At the subatomic level, particles exhibit unique properties, such as wave-particle duality and quantum entanglement. These phenomena challenge our traditional understanding of physics and lead to advancements in technology, including semiconductors and quantum computing. The study of the subatomic scale continues to reveal the complexities of the universe.