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covalent bond
the chemical bond that results from sharing valence electrons
this is formed when two or more atoms bond covalently
Lewis structure
you can represent the arrangement of electrons in a molecule
sigma bonds
single covalent bonds are also called
pi bond
this forms when parallel orbitals overlap and share electrons
endothermic reaction
this occurs when a greater amound of energy is required to break the existing bonds in the reactants than is released when the new bonds form in the products
exothermic reaction
this occurs when more energy is released during product bond formation than is required to break bonds in the reactants
an acid that contains both a hydrogen atom and an oxyanion
polar covalent bond
unequal sharing