Examlex
A decrease in ________ hormones appears to increase osteoporosis risk.
Avogadro's Number
A constant that represents the number of constituent particles, usually atoms or molecules, that are contained in one mole of a substance, approximately \(6.022 \times 10^{23}\).
Carbon-12
A stable isotope of carbon with 6 protons and 6 neutrons, serving as the standard for atomic mass among elements.
Atoms
The basic units of matter, consisting of a nucleus surrounded by electrons.
Mass Number
The total number of protons and neutrons in an atom's nucleus, determining the atom's mass.
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