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    •  Science >> Science Discoveries >  >> Chemistry
    Understanding the Building Blocks of Matter: Protons, Neutrons, and Electrons
    The three subatomic particles that make up an atom are:

    * Protons: Positively charged particles located in the nucleus of the atom.

    * Neutrons: Neutrally charged particles also located in the nucleus.

    * Electrons: Negatively charged particles that orbit the nucleus in shells or energy levels.

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