Chemical Bonds & Intermolecular Forces Unit 3 Chem
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Across
group of two or more atoms held together
with covalent bonds that has no charge
___ Energy: energy required to break a chemical bond
and form neutral isolated atoms
Attraction between atoms that results from the gain, loss, or sharing of electrons
between atoms
Chemical compound composed of molecules
____ difference: difference in the electronegativities of two atoms
Used to determine the bond type
Covalent bond hat exists when atoms with
different electronegativities share electrons
in a covalent bond
______ formula: expression that defines the number of atoms of each element in a single molecule of a compound
_____ Rule:
Atoms that have 8 valence electrons tend to be stable
Atoms will gain, lose or share valence electrons in order to become stable
Diatomic _____: found in nature as diatomic molecules include N O Fl Cl Br I
____ formula: Combination of symbols and subscripts that represents a molecule
Down
___ formula: Chemical formula that shows the numbers and types of atoms as well as how the atoms are arranged.
Covalent bond that is formed when electrons are shared equally between two atoms
molecule composed of two atoms of the same element
formula that represents the simplest whole-number ratio of various atoms present in a compound
____ force of attraction or repulsion which act between neighboring particles
Bond typically forms between a metal and a nonmetal
an attraction between two atoms that already participate in other chemical bonds; one atom must be hydrogen
Bond typically forms between atoms of nonmetals by sharing of electrons
Bond typically forms between atoms of metals
_____ unit: simplest unit of repetition in an ionic compound
____ Structure Notation in which only the valence electrons
of an atom are represented
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