Chemical Bonds
octet rule
-bonded atoms will have maximum number of valence electrons -same number as noble gases
Ionic Bonding Diagram
Emperical Formula = NaCL
polar covalent bond
bond between 2 atoms with different electronegativity
nonpolar covalent bond
bond between 2 atoms with similar electronegativity
metal atom in metallic bonding becomes BLANK
cation(+)
ionic bonding forms BLANK
crystals
properties of ionic compounds
crystals at room temp, high melting point, conducts electricity when melted or dissolved in water
same elements in covalent bonding can form BLANK
different molecular formulas
total number of electrons lost by metal atoms must BLANK
equal total number of electrons gained by nonmetal atoms
metal atoms in metallic bonding BLANK in electrons
float
nonmetals BLANK electrons
gain
nonmetal atom in ionic bonding BLANKS
gains valence electrons and becomes negative
number of valence electrons of a representative element
its group number
metals BLANK electrons
lose
metal atom in ionic bonding BLANKS
loses valence electrons and becomes positive
metallic bonding is BLANK of valence electrons
loss
Metallic Bonding
metal + metal
Ionic Bonding
metal atom + non-metal atom (large electronegativity difference)
metallic bonding special note
metal element or metal mixture/alloy
metallic bonding forms BLANK
metal network
metals are malleable because BLANK
metals have mobile valence electrons
covalent bonding forms BLANK
molecules
shared electrons in covalent bonding are BLANK
negative between positive nucleus of both atoms
electrical charge of an ionic compound
neutral
Covalent Bonding
non-metal + non-metal (similar electronegativity)
atoms in covalent bonding follow BLANK
octet rule
atoms in ionic bonding follow BLANK
octet rule
atoms in metallic bonding follow BLANK
octet rule
atoms in covalent bonding BLANK
overlap so some valence electrons are in both atoms
chemical bonds
positive or negative attractions between different atoms
atoms in metals are a BLANK
sea of electrons
covalent bonding is BLANK of valence electrons
sharing
ionic bonding is BLANK of valence electrons
transfer
what causes chemical bonds
valence electrons of the atoms
