Chapter 2 Flashcards: The Chemistry of Life
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negatively charged particles that orbit the nucleus of an atom
electrons
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positively charged particles in the nucleus of an atom
protons
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the paths with different energy levels where electrons circulate around the nucleus
electron shells
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an atom that has gained or lost one or more electrons
ion
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two atoms share a pair of electrons, creating a strong attraction
covalent bond
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two or more atoms linked by covalent bonds
molecule
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weak attraction of partially charged regions between polar molecules
hydrogen bond
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concentration of hydrogen ions (protons) in a solution
pH