Bond Type:Covalent or Ionic?
Properties
Draw the Lewis Dot
What is the bond and molecule polarity?
What is the bond and molecule polarity?
IMFs
Grab Bag
100
HBr
Covalent -two nonmetals
100
What is the conductivity of a solid compound made of only carbon and hydrogen?
Two nonmetals- covalent bonding- no conduction
100
HBr
This is a polar bond and a polar molecules
100
Which term identifies a force of attraction that exists between molecules of ammonia (NH3).
Hydrogen-bonding
NOT A BOND!!!!
100
How many electrons are shared between C and O in this molecule?
Four electrons are shared (it's a double bond- two pairs, four electrons).
200
CCl
Covalent- two nonmetals
200
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely what? And what causes the conduction?
It is a metallic substance, and the conduction is caused by mobile electrons.
200
CCl4
Polar bonds, nonpolar molecule due to symmetrical distribution of charge
Polar bonds but nonpolar molecule due to symmetry
200
A certain compound has a low boiling point and is insoluble in water. This compound most likely exists as
ionic crystals metallic crystals
nonpolar molecules polar molecules
nonpolar molecules
200
What kind of bond exists between C and H in this molecule.
Covalent (polar covalent)
300
NCl
Polar Covalent
300
Which of the following is a molecular compound:
NH4NO2, LiCl, C6H12O6, Ag
C6H12O6
300
NCl3
Polar bonds and polar molecule due to asymmetry
300
Dipole-dipole attractions exist in which of the following compounds?
H2, CH4, HCl , CO2
HCl (the other 3 are nonpolar molecules)
300
Explain in terms of electrons, why rubidium is a good conductor.
Rb has freezing moving electrons
("sea of electrons")
400
SrO
Ionic- Metal and Nonmetal
400
What is the conductivity of a solid compound made of lithium and chlorine?
Nonconductive- because LiCl is ionic and solid ionics do not conduct.
400
N2
Nonpolar bond and nonpolar molecule
400
Which compound has the stronger intermolecular forces?
H2Se H2S H2O
H2O
400
Draw a Lewis Dot Structure for LiF
or 
500
MgCl
Ionic- Metal and Nonmetal
500
Which of the following has the highest melting point?
CH4, C6H12O6, NH3, NaCl
NaCl- ionic bonding results in high melting points.
500
H2O
Polar bonds, polar molecule due to asymmetry
Polar bonds, polar molecule due to asymmetry
500
Why is Br2 a liquid at STP and I2 a solid at STP?
Molecules of I2 have stronger intermolecular forces than molecules of Br2
500
Explain, in terms of charge distribution, why a molecule of NH3 is polar.
There is an asymmetrical/uneven distribution of charge