CHEMISTRY 101 EXAM 2 QUESTIONS
WITH CORRECT ANSWERS
Lewis structure - CORRECT ANSWER -
a diagram of a molecule showing how the valence electrons are arranged among the atoms in t
he molecule in a covalent compound & polyatomic ions
resonance structure - CORRECT ANSWER -
combo of all Lewis structures w/ the weight = to the relative energy
VSPER (valence shell electron pair repulsion theory) - CORRECT ANSWER -
determines the 3D structures of a molecule; based on fact that electrons repel each other
diatomic elements - CORRECT ANSWER -Hydrogen (H2)
Nitrogen (N2)
Oxygen (O2)
Fluorine (F2)
Chlorine (Cl2)
Iodine (I2)
Bromine (Br2)
Ionic compounds form... - CORRECT ANSWER -extended structures held together by non-
direction ionic bonds
Covalent bonds form... - CORRECT ANSWER -discrete molecules held together by covalent bonds
— - CORRECT ANSWER -outer atom on same plane as central atom
, - - - - CORRECT ANSWER -outer atom behind central atom
- CORRECT ANSWER -outer atom in front of central atom
polar molecule - CORRECT ANSWER -
must have chemical bonds w/ difference in EN greater or equal to 0.5
must be asymmetric (in symmetrical compounds all polar bonds cancel)
soluable compound - CORRECT ANSWER -
at least 0.02 moles of compound can dissolve in 1 liter of water
insoluable compound - CORRECT ANSWER -
less than 0.02 miles of compound can dissolve in 1 liter of water
salt - CORRECT ANSWER -ionic compound
precipitation reaction - CORRECT ANSWER -
reaction driven forward by the formation of a solid precipitate
FUE (Formula Unit Equation) - CORRECT ANSWER -
shows all the chemical compounds in a reaction
NIE (Net Ionic Equation) - CORRECT ANSWER -
shows only the chemical species involved in the chemistry
Reduction - CORRECT ANSWER -gain of electrons
WITH CORRECT ANSWERS
Lewis structure - CORRECT ANSWER -
a diagram of a molecule showing how the valence electrons are arranged among the atoms in t
he molecule in a covalent compound & polyatomic ions
resonance structure - CORRECT ANSWER -
combo of all Lewis structures w/ the weight = to the relative energy
VSPER (valence shell electron pair repulsion theory) - CORRECT ANSWER -
determines the 3D structures of a molecule; based on fact that electrons repel each other
diatomic elements - CORRECT ANSWER -Hydrogen (H2)
Nitrogen (N2)
Oxygen (O2)
Fluorine (F2)
Chlorine (Cl2)
Iodine (I2)
Bromine (Br2)
Ionic compounds form... - CORRECT ANSWER -extended structures held together by non-
direction ionic bonds
Covalent bonds form... - CORRECT ANSWER -discrete molecules held together by covalent bonds
— - CORRECT ANSWER -outer atom on same plane as central atom
, - - - - CORRECT ANSWER -outer atom behind central atom
- CORRECT ANSWER -outer atom in front of central atom
polar molecule - CORRECT ANSWER -
must have chemical bonds w/ difference in EN greater or equal to 0.5
must be asymmetric (in symmetrical compounds all polar bonds cancel)
soluable compound - CORRECT ANSWER -
at least 0.02 moles of compound can dissolve in 1 liter of water
insoluable compound - CORRECT ANSWER -
less than 0.02 miles of compound can dissolve in 1 liter of water
salt - CORRECT ANSWER -ionic compound
precipitation reaction - CORRECT ANSWER -
reaction driven forward by the formation of a solid precipitate
FUE (Formula Unit Equation) - CORRECT ANSWER -
shows all the chemical compounds in a reaction
NIE (Net Ionic Equation) - CORRECT ANSWER -
shows only the chemical species involved in the chemistry
Reduction - CORRECT ANSWER -gain of electrons
