Transcript Atomic Structure

Max, Justin, Amy
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The word atom comes from the Greek word
meaning “incapable of being divided.”
The definition of atom is: the smallest part of
an element; indivisible by ordinary chemical
means.
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Protons: Have a positive charge. +
Neutrons: Uncharged or neutral. +Electrons: Have a negative charge. –
Protons and electrons are equal in strength, and
must be balanced.
Atoms with same charge repel, with opposite
charge attract.
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The planetary model of an atom portrays the
atom as a miniature solar system in which the
protons and neutrons are clustered at the
center of the atom in the atomic nucleus.
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This modern model of atomic structure, called
the orbital model, has proved to be more useful
in predicting the chemical behavior of atoms.
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Marieb, Elaine. “Atomic Structure.” Essentials of
Human Anatomy & Physiology. Serina
Beauparlant. 8th Edition. San Francisco.
Pearson Benjamin Cummings. 2006. 29-30.
Print.
“Stock Photography: Orbital model of atom.”
Dreamstime. 22 August 2013. Web.
http://www.dreamstime.com/stockphotography-orbital-model-atomimage10634382