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Transcript
Chapter 4
Section 1 Atomic Structure
What’s in an Atom?
• Atoms are made of protons, neutrons, and electrons.
• At the center of each atom is a small, dense
nucleus with a positive electric charge.
• The nucleus is made of protons (a subatomic
particle that has a positive charge) and neutrons
(a subatomic particle that has no charge).
• Moving around outside the nucleus is a cloud
of electrons: subatomic particles with
negative charges.
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