PHYSIOLOGY (FLGX113) ENGLISH NOTES_S.U. 2

PHYSIOLOGY (FLGX113) ENGLISH
NOTES_S.U. 2

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FLGX113: INTRODUCTION TO PHYSIOLOGY



STUDY UNIT 2
CHEMICAL COMPOSITION OF THE HUMAN BODY

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DEFINITIONS

Basic chemical terminology &
processes
ATOM Smallest component of an element having the chemical
properties of the element, consisting of a nucleus containing
combinations of neutrons and protons and one or more
electrons;
Smallest unit of matter




CHEMICAL ELEMENT Specific type of atom
ATOMIC NUMBER Amount of protons (positive) in nucleus of atom
ATOMIC WEIGHT Indicates an atom’s mass relative to the mass of other types of
atoms;
The average weight of an atom of an element, based on the
weight of the carbon-12 atom




ISOTOPE Any of two or more forms of a chemical element, having the
same number of protons in the nucleus (atomic number), but
having different numbers of neutrons in the nucleus (atomic
weight)




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FLGX113_ENGLISH NOTES