chemistry

periodic table
table of elements
period
a row in the periodic table
group
a column in the periodic table
periodic law
pattern of repeating properties in the periodic table
luster
the shininess in an element
malleability
the flexibility in an element
valence electron
is an electron that is in the highest leval of energy of an atom
alkali metals
elements in group 1A
alkaline earth metals
elements in group 2A
halogens
elements in group 7A
noble gases
elements in group 8A
inert
inactive, a property of argon
ion
an atom with either pos or neg charge
anion
an atom with a neg charge
cation
an atom with a pos charge
ionic bond
the bond between a metal and nonmetal ion
cavalent bond
the bond between pairs of electrons on an wtom between another
chemical formula
a notation that shows what element a compound contains and the ration of the atom or ions
molecule
a subatmic particle made of two atoms
atom
a subatomic particle, the basic subatmic particle
polyatomic ion
a covalenty bonded group of atoms that has a positive or negatiove charge and acts as a unit
metallic bond
the bond of a metal cation and the shared electrons that surround it
alloy
a mixture between 2 atoms which at least one is a metal