C2: Bonding Flashcards
Class 2 (38 cards)
what is STP?
- what is the volume of 1 mol of gas at STP?
T= 273K or 0 degrees C, P= 1atm
- 1 mol of gas = 22.4L
what are standard state conditions for temperature and pressure?
T= 298K or 25 degrees C, P= 1 atm
metals tend to form ____ and usually have ____ oxidation states
cation; positive
are metals…
- ductile
- malleable
- good/bad thermal conductors
- good/bad electrical conductors
- yes
- yes
- good
- good
nonmetals have a ____ melting point than metals and form ____
lower; anions
metalloids have characteristics of ….
metals and nonmetals
what is an intramolecular bond?
- intermolecular bond?
- which of the 2 is stronger?
a bond within a molecule
- a bond between 2 molecules
- intramolecular bonds are much stronger
what is an ionic bond?
- a big difference in ____ is needed for these types of bonds
when a metal gives electrons to a nonmetal
- electronegativity
what is a covalent bond?
- if electronegativity is different, it is a…
(nonmetal + nonmetal)
nonmetals SHARE valence electrons to get an octet
- polar bond with a dipole moment
what is a polar bond?
when electron density between 2 nuclei is uneven (electronegativity difference) and a dipole moment exists
the greater the electronegativity difference, the greater the …
dipole moment
what is a coordinate covalent bond?
when one atom donates both of the electrons in a bond (lewis base) and another atom atom accepts electrons (lewis acid)
what happens when a coordinate covalent bond breaks?
the electrons that come from the lewis base will leave with that lewis base
if dipole exists on a molecule, the molecule must be ….
polar
what is an ion dipole bond?
- does this bond show a permanent or weak dipole?
a bond between an ion and a polar molecule
- permanent
what is a dipole- dipole bond?
- does this bond show a permanent or weak dipole?
a bond between 2 polar molecules
- permanent
what is a dipole induced dipole bond?
- does this bond show a permanent or weak dipole?
a bond between a polar molecule and a non polar molecule
- both
what is a london dispersion force bond?
- does this bond show a permanent or weak dipole?
- LDF is a ____ force
- ____ only experience LDF
a bond between 2 non- polar molecules
- weak
- default
- nonpolar
sort the following bonds from strongest to weakest:
- dipole induced dipole
- ion dipole
- LDF
- dipole dipole
from strongest to weakest:
- ion dipole
- dipole dipole
- dipole induced dipole
- LDF
what kinds of bonds are considered van der Waal forces?
dipole dipole, dipole induced dipole, LDF
____ bonding is the strongest type of intermolecular force between neutral molecules. these types of bonds only occur between ….
hydrogen; N, O, F
for N, O or F…
- they donate ____ charges from their lone electrons
- are weak lewis ____
- are hydrogen bond ____
- negative
- bases
- acceptors
for a hydrogen bound to N, O or F…
- it has a partial ____ charge and accepts a ____ charge
- is a weak lewis ____
- is a hydrogen bond ____
- positive; negative
- acid
- donor
within a strong intermolecular force is it ….
- harder/easier to separate molecules during phase transitions
- higher/lower melting point
- higher/lower boiling point
- greater/smaller viscosity
- higher/lower vapor pressure
- harder
- higher
- higher
- greater
- lower
