What is matter made up of
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Understanding the Composition of Matter
Fundamental Building Blocks of Matter
Matter, the substance that constitutes the physical world, is composed of atoms. Each atom consists of a nucleus surrounded by a cloud of electrons. The nucleus itself is made up of protons and neutrons, which are further composed of even smaller particles called quarks. Quarks and electrons are considered fundamental particles, meaning they are not made up of anything smaller Cottrell2019Buras2020.
The Role of Quarks and Electrons
Protons and neutrons, found in the nucleus of an atom, are made up of quarks. Specifically, a proton consists of two up quarks and one down quark, while a neutron consists of two down quarks and one up quark. These quarks are held together by strong interactions mediated by particles known as gluons . Electrons, which orbit the nucleus, play a crucial role in forming chemical bonds between atoms, leading to the creation of molecules and molecular chains .
The Standard Model of Particle Physics
The Standard Model of particle physics provides a comprehensive framework for understanding the fundamental particles and the forces that govern their interactions. It categorizes particles into fermions (matter particles) and bosons (force carriers). The electromagnetic force is mediated by photons, the strong force by gluons, and the weak force by W and Z bosons. However, gravity is not included in the Standard Model .
Dark Matter and Dark Energy
While ordinary matter makes up a significant portion of the universe, it only accounts for about 30% of the total mass-energy content. The rest is composed of dark matter and dark energy. Dark matter, which constitutes approximately 25% of the universe's mass, remains largely mysterious, with candidates like neutralinos and axions being investigated Zioutas20046. Dark energy, an even more enigmatic force, is believed to drive the accelerated expansion of the universe .
The Energy Basis of Matter
Matter is fundamentally linked to energy, particularly light. Photons, the particles of light, contribute to the energy structure of matter. The nuclei of atoms, composed of protons and neutrons, are massive and stable, while electrons, which are lighter, are in constant motion, facilitating the formation and breaking of chemical bonds .
Conclusion
In summary, matter is composed of atoms, which are made up of protons, neutrons, and electrons. Protons and neutrons are further composed of quarks, held together by gluons. The Standard Model of particle physics provides a detailed understanding of these fundamental particles and their interactions. Additionally, dark matter and dark energy play significant roles in the universe's composition, though their exact nature remains a subject of ongoing research. Understanding the energy basis of matter, particularly the role of photons, adds another layer to our comprehension of the physical world.
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