PS1.A: Structure & Properties of Matter
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Atoms, Isotopes, and Ions
$12.95 – $86.95Model the sub-atomic particles in atoms, isotopes, and ions.
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Brittle Bones: A Density Problem
$20.95 – $174.95How does low bone density increase the risk for bone fractures?
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Enzymes and Lactose Intolerance
$18.95 – $122.95How do enzymes help people with lactose intolerance?
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