Definition - What does Particle mean?

Particle is a minute fragment of matter. In physical chemistry, the term is used to describe a tiny localized object. The treatment of phenomena is complex thus the concept of Particles is used to describe the modeling nature. It is distinguished in three different classes, i.e., macroscopic, microscopic and subatomic Particles. A Particle is helpful in understanding the atomic and molecular physics of molecules. Due to their extremely small size, Particles are a part of quantum mechanics.

Petropedia explains Particle

The tiniest fragment of matter is known as a Particle. The macroscopic particles are larger than atoms whereas the subatomic particles are smaller than the atoms. According to Particle Physics, there are a broad range of Particles that are produced during the production of cosmic rays and Particle accelerators. The elementary particles and composite particles both undergo particle decay. However, some particles such as electron or helium-4 nucleus do not undergo the same process thus they are called stable particles. During Particle decay, some radiations known as photons are emitted.

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