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KOTELCHEMMODULE7
KOTEL CHEMISTRY MODULE 7 VOCABULARY
Question | Answer |
---|---|
chemical bond that results from the sharing of valence electrons | covalent bond |
forms when two or more atoms covalently bond and is lower in potential energy than its constituent atoms | molecule |
a model that uses electron-dot structures to show how electrons are arranged in molecules. Pairs of dots or lines represent bonding pairs | Lewis Structure |
atoms sharing one pair of electrons | single bond |
atoms sharing two pairs of electrons | double bond |
atoms sharing three pairs of electrons | triple bond |
distance between two bonded nuclei at the position of maximum attraction | bond length |
chemical reaction or process in which a greater amount of energy is required to break the existing bonds in the reactants than is released when the new bonds form in the product molecules | endothermic reaction |
chemical reaction or process in which more energy is released than is required to break bonds in the initial reactants | exothermic reaction |
energy required to break a bond | bond energy |
contains hydrogen and one other element | binary acid |
contains hydrogen, oxygen, and a third element | oxyacid |
molecular model that uses symbols and bonds to show relative positions of atoms | structural formula |
condition that occurs when more than one valid Lewis structure exists for the same molecule | resonance |
based on an arrangement that minimizes the repulsion of shared and unshared pairs of electrons around the central atom | VSEPR theory |
process in which atomic orbitals are mixed to form new, identical hybrid orbitals. | hybridization |
type of bond that forms when electrons are not shared equally | polar covalent bond |
type of bond that forms when electrons are shared equally | nonpolar covalent bond |
weak forces of attraction that act between molecules | intermolecular forces |