3 Tutorials that teach The Atom
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The Atom

The Atom

Author: Rebecca Keller
This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons.
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Introduction to Psychology

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Source: Zumdahl, S. S. and Zumdahl, S. A. (2007). Chemistry, 7th ed. Boston. Houghton Mifflin Company