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15 Cards in this Set

  • Front
  • Back
any atom or group of atoms with a negative charge
any atom or group of atoms with a positive charge
a compound composed pf 2 elements NaCl and Al2O3 are..........
binary compound
shows the number and type of atoms present in the smallest representative unit of a substance
chemical formula
the lowest whole number ratio of ions in an inonic compound
formula unit
an atom or group of atoms that has a positive or negative charge
a compound composed of positive and negative ions
ionic compound
in any sample of a chemical compound, the elements are always combined in the same proportion by mass
law of definitite propertions
whenever 2 elements from more than 1 compound, the different masses of 11 element that combined with the same mass of the other element aree in the ratio of small whole #'s
law of multiple proportions
a natural chemically bonded group of atoms that act as a unit
a compound that is composed of molecues
molecular compound
a tightly bound group of atoms that behaves as a unit and charries a charge
polyatimic ion
group a on the periodci table
representative element
an electron in the highest occupied energy level of an atom
valence electrons
atoms react by gaining or losing electrons so as to acquire the stable electron structure of a noble gas, usually eight valence electrons
octet rule