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Atomic Structure: Protons, Neutrons, Electrons

Learn about the basic components of an atom - protons, neutrons, electrons and how they contribute to the atomic structure, charges, and characteristics. Discover how to determine mass number, atomic number, and symbol meanings.

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Atomic Structure: Protons, Neutrons, Electrons

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  1. Basic Parts of an Atom

  2. Charges • Protons- positive (+) • Neutrons-neutral (0) • Electrons- negative (-)

  3. Protons • Protons have a positive charge (+) • They are found inside of the nucleus

  4. Neutrons • Neutrons have a neutral charge (0) • They are found inside of the nucleus with the protons

  5. Electrons • Electrons have a negative charge (-) • They are orbiting outside of the nucleus

  6. What It Tells You • Mass Number- protons plus neutrons; bigger number • Atomic Number- protons or electrons; smaller number • Symbol- abbreviated name; letters

  7. Questions • 1. What is the charge of the electron? • 2. Where is the proton found? • 3. How do you find the atomic number in an element? • 4. What does the symbol tell you in an element?

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