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30 terms

Chemical Formulas

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symbol
something that stands for or represents something else
chemical formula
a combination of chemical symbols and numbers to represent a substance
molecule
(physics and chemistry) the simplest structural unit of an element or compound
monatomic
having one atom in the molecule
diatomic
of or relating to a molecule made up of two atoms
qualitative analysis
the act of decomposing a substance into its constituent elements
quantitative analysis
chemical analysis to determine the amounts of each element in the substance
emperical formula
simple whole number ratios of elements in a compound
molecular formula
a chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of a compound
structural formula
an expanded molecular formula showing the arrangement of atoms within the molecule
metals
located to the left of the zig-zag line and are malleable, good conductors, ductile, shiny, mostly solids.
non metals
right of the zigzag line, not malleable/ductile, not shiny, poor conductors.
semi metals
elements on the periodic table that have properties of both metals and nonmetals
metaloids
elements that touch the zigzag line except Aluminum - share properties of metals and nonmetals
periodic table
a tabular arrangement of the chemical elements according to atomic number as based on the periodic law
ions
electrically charged atoms that have gained or lost electrons.
ionic compounds
compounds composed of cations and anions
formula units
lowest neutral whole number ration of ions from an ionic compound
cations
positively charged ions
anions
negatively charged ions
binary compound
chemical compound composed of only two elements
polyatomic ions
tightly bound groups of atoms that behave as a unit and carry a charge
stock system
the roman numerals in parenthesis to indicate the charge of an atom
ternary compounds
Compound that contains atoms of three or more different elements
molecular compounds
compounds composed of molecules.
oxidation number
the degree of oxidation of an atom or ion or molecule. for simple atoms or ions the oxidation number is equal to the ionic charge; "the oxidation number of hydrogen is +1 and of oxygen is -2"
binary acids
acids that consist of two elements, usually hydrogen and a halogen
ternary acids
Oxides containing hydrogen, oxygen, and one other element
hypo
below, under, deficient
per
through