Anatomy & Physiology - Chapter 2 Exam Study Guide.
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Course
Anatomy and physiology
Institution
Anatomy And Physiology
Anatomy & Physiology - Chapter 2 Exam
Study Guide.
Elements - answersubstance composed of only one type of atom that cannot be broken into
simpler constituents by chemical means
compounds - answerchemical combination of two or more elements
atoms - answersmallest particle of a chemical element...
energy level - answer✔limited region surrounding the nucleus of an atom at a certain distance
containing electrons; shell
octet rule - answer✔atoms with fewer or more than eight electrons in the outer energy level will
attempt to lose, gain, or share electrons with other atoms to achieve stability
inert - answer✔stable element; maximum amount of electrons in outer shell
atomic weight - answer✔average atomic mass of an atom of an element as it is found in nature;
atomic weights are usually found in the periodic table of elements
radioisotope - answer✔unstable isotope that undergoes nuclear breakdown and emits nuclear
particles and radiation
decay - answer✔emition of nuclear particles and radiation
chemical reaction - answer✔interaction between two or more atoms that occurs as a result of
activity between electrons in their outermost energy levels
molecules - answer✔two or more atoms covalently joined together
chemical bonds - answer✔energy relationship joining two or more atoms; involves sharing or
exchange of electrons
ions - answer✔electrically charged atom or group of atoms
ionic bond (electrovalent bond) - answer✔formed by transfer of electrons; strong electrostatic
force that binds positively and negatively charged ions together
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