Chemistry Overview: 4 major elements (C, H, O, N) pH Water’s role in the body A lot of terminology! An atom- smallest unit of Stable matter Ex. Carbon, Hydrogen, Oxygen, Nitrogen Subatomic Particles Proton: Positive charge, 1 mass unit Neutron: Neutral charge, 1 mass unit Electron: Negative charge, low mass Ions If protons are not equal to electrons the atom is now known as an ion Cation = (+) Anion = (-) Valence Shell vs. Core Electrons Valence (outer) electron shells “Want” to be filled More stable…
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