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13 Cards in this Set
- Front
- Back
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atomic # |
# of protons in nucleus |
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4 major elements |
O, C, H, N |
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Lesser elements |
Ca, P, K, S, Na, Cl, Mg, Fe |
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minerals |
inorganic elements that are extracted from soil by plants and passed to humans |
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atomic mass |
protons+neutrons |
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in an electrically neutral atom..... |
# of protons = # of electrons |
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isotopes |
different # of neutrons
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ion |
charged particle w/ unequal # of protons & electrons |
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definition of electrolytes |
ionize in water & form solutions that can conduct electricity |
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uses of electrolytes |
- chemical reactivity
- osmotic effect - electrical effect |
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free radicals |
chemical particles w/ odd # of electrons that destroy molecules |
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how are free radicals created? |
some metabolic reactions, radiation, chemicals |
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what substances neutralize free radicals? |
antioxidants; superoxide dismutase, vitamin E & C, beta carotene |
