AP Chem
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is the energy required to break a bond? | bond energy
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| this form of bonding consists of a metal with a nonmetal | ionic
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| what law can be used to calculate the interaction energy between a pair of ions? | coulomb's law
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| what is coulomb's law? | e = (2.31 x 10^-29 J nm)(Q1Q2)/r
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| what kind of bonding shares electrons? | covalent bonding
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| what is the name for the ability of an atom to attract shared electrons to itself? | electronegativity
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| describe the trend in electronegativity on the periodic table. | increases accross a period and decreases down a group
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| what type of bond has zero electronegativity? | covalent
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| what type of bond has a large electronegativity? | ionic
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| what type of bond is intermediate? | polar covalent bond
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| what is a dipole? | a molecule with a negative and positive center of charge
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| this is a bond between two nonmetals. | covalent bond
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| relate size to nuclear charge | size decreases as nuclear charge increases.
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| what is lattice energy? | the change in energy that takes place when separated gaseous ions are packed together to form and ionic solid
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| lattice energy can be calculated using which changed law? | coulomb's law with the constant as k
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| what is the equation for percent ionic character? | (measured dipole moment of x-y/ calculated dipole moment of x-y) * 100%
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| describe the trend between ionic character and electronegativity | ionic character increases with electronegativity
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| why do chemical bonds occur? | to seek the lowest possible energy
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| endothermic or exothermic has a negative sign? | exothermic
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| endothermic or exothermic has a positive sign? | endothermic
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| rule for the change in bond energies | change H = energy required-energy released
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| what are lone pairs? | pairs of electrons localized and unbonded on an atom
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| what are bonding pairs? | electrons found between the atoms in space that are bonded
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| what rule do most elements obey when forming lewis structures? | octet rule
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| name exceptions to the octet rule | period 3 elements, boron
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| what is resonance? | more than one bond position
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| given the designation what is the name: AB2 | linear (180)
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| given the designation what is the name: AB3 | trigonal planar (120)
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| given the designation what is the name: AB4 | tetrahedral (109)
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| given the designation what is the name: AB5 | trigonal bipyramid (90)
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| given the designation what is the name: AB6 | octahedral (90)
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| given the designation what is the name: AB2E | bent/angular (120)
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| given the designation what is the name: AB3E | trigonal pyramid (107)
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| given the designation what is the name: AB4E | seesaw.sawhorse (90 and 120)
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| given the designation what is the name: AB5E | square pyramid (90)
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| given the designation what is the name: AB2E2 | bent/angular (105)
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| given the designation what is the name: AB3E2 | t-shape(90)
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| given the designation what is the name: AB4E2 | square planar (90)
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| given the designation what is the name: AB2E3 | linear (180)
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| given the designation what is the name: AB3E3 | t-shape (90)
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| given the designation what is the name: AB2E4 | linear (180)
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