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46 Cards in this Set

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Johann Dobereiner
discovered similar triads of elements
John Newlands
made the 1st periodic table of elements ordered by atomic masses
Mendeleev
predicted the properties of elements
Glenn Seaborg
actinide concept which led to the arangement of elements
J.F. Hyde
race track periodic table
Philip Stewart
designer of the channel galaxy
Periodic Law
That all elements are placed into groups on the periodic such that their properties repeat in a pattern
Family
vertical
period
horizontal
Ionization Energy
energy needed to move an electron
octet rule
inorder to be stable an element will gain, loose, or share electrons to fill the outermost energy level
noble gas
member of group 8
alkali metal
member of group 1
alkaline earth metal
member of group 2
halogen
member of group 7
valence electrons
outermost energy level
atomic radius
from the nucleus to the outermost electrons
shielding effect
inner electrons interfere with nucleus attraction
ionic radius
distance from nucleus to the filled outermost level
Bartlett
found the first noble gas compound
metal
want to loose electrons
metallic bond
floating sea of electrons around many metal nuclei
luster
shine that comes on metals from an electron
ductile
able to be stretched like a wire
malleable
bended of flattened when put under pressure
thermal conductivity
movement of kinetic energy
melting point
the temperature at which a solid changes to a liquid.
ionic bond
between a metal and a nonmetal when a metal looses and electon and a nonmetal gains an electron
cation
smaller and positive
anion
larger and negative
lattice
arrangement of the ions in a crystal structure
ionic solid
formed from metal cation and nonmetal anions. the melting point is very high
hydroxide ion
identifies a basic solution
basic solution
produces a hydroxide ion and is formed by metals
electron affinity
energy associated with the adding of electrons to an atom
electronegativity
ability to attract the electron to yourself in a covalent bond
diatomic molecule
two atom molecules as an element bofinch
covalent bond
sharing of electrons between nonmetal nuclei
hydronium ion
identifies and acid
acidic solution
produces hydrogen formed by nonmetals
hydride
a compound that has hydrogen as its anion
metalliod
almost all of its properties from one side as opposite to the other
allotrope
having two forms only nonmetals
transition metals
located in the d block and are less reactive
ore
impure form of metal found in the ground
alloy
mixture of metals or metals and nonmetals