Over time, quarks and leptons began to form protons, neutrons and electrons. We also know that they are made up of smaller particles such as quarks and leptons.Īfter the Big Bang, 13.7 billion years ago, our very hot universe began to expand and become cooler, allowing the formation of quarks and leptons. But now we know that atoms are made up of three types of particles: protons, neutrons, and electrons. The term “atom” comes from the Greek word Atomus, which means “indivisible.” At that time, the Greeks believed that the atom was the smallest thing in the universe and could not be divided. The atom is the smallest building stone or the smallest part of a chemical element that retains the chemical properties of that element, and thus it is considered as the basic unit of matter that controls the structure of the elements. Let’s start our journey from the atom to understand what it means. Other particles are produced from nuclear reactions, but they are unstable. Protons and neutrons are made up of smaller particles called quarks. Subatomic particles are particles much smaller than atoms, such as protons, electrons, and neutrons that make up the atom. The term particle always refers to objects of small sizes, and the most important types of particles are atomic and subatomic particles, each of which has different properties. In the physical sciences, a particle is a small localized object to which can be ascribed several physical or chemical properties, such as volume, density, or mass. What are The Three Types of Subatomic Particles?īefore we get to know subatomic particles, let’s first get to know the particles in chemistry and physics.
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