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Protons, Neutrons, and Electrons: What Atoms Are Made Of - Class 9 Notes

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Atoms: The Building Blocks of Everything Atoms are the fundamental units that compose all matter. Our bodies are primarily made of hydrogen, carbon, nitrogen, and oxygen atoms, with a single cell containing approximately one trillion atoms. Each atom consists of smaller subatomic particles, including protons, neutrons, and electrons, which determine the atom's properties and behavior. Protons and neutrons form the nucleus, while electrons orbit in shells around it The number of protons defines the element, while electrons determine chemical properties Atoms can become ions by gaining or losing electrons, altering their charge balance Understanding atomic structure is crucial for comprehending the nature of matter and chemical reactions
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