IMF's
The IMF with the strongest IMF resulting in a very high melting and boiling point.
What is an ionic bond (ion-ion)?
Linear shape bond angle.
What is 180 degrees?
Trigonal Pyramidal bond angle.
What is 107 degrees? (109o ok)
What VSEPR stands for.
What is Valence Shell Electron Pair Repulsion?
When molecules have a high melting and boiling point, that means their IMF's are stronger or weaker.
What is stronger?
How to know if a bond is linear.
What is if there are only two bonds and no lone pairs (can be double or triple bonds) or if only two atoms are in the molecule?
Tetrahedral bond angle.
What is 109 degrees? (109.5o OK)
The two different types of pair repulsion of VSEPR's.
What is lone electron pairs and bonded electron pairs?
Molecules do this to their IMF's to boil or melt.
What is overcome?
London dispersion forces are stronger in molecules with a molar mass that is this.
What is larger?
Bent shape bond angle.
What is 104.5 (water) degrees or about 120 degrees?
How to know if a bond is trigonal pyramidal.
What is if there are three bonds with one lone pair?
The process to determining if a molecule is polar.
What is by first determining whether the molecules are ionic or covalent. (Ionic means must be polar.) Then use the electronegativity scale to determine if it has polar or non-polar bonds. And finally, determine whether the molecule is symmetrical or not? If it is NOT symmetrical and it has polar bonds, then it is a polar molecule.
Intermolecular forces are not one of these.
What is a bond or forces within a molecule?
Hydrogen bonds are strong due to high bonds of these types of molecules. (_____, _____, or _____) atoms MUST BE connected to __________ atom.)
What is polar molecules which have N, O or F bonded to a H atom?
How to know if a bond is bent.
What is if there are two bonds with 1 or 2 lone pairs?
How to know if a bond is tetrahedral.
What is if there are four bond with no lone pairs?
This helps to identify molecular shape.
What is VSEPR theory?
The 4 basic types of intermolecular forces, listed in order from weakest to strongest.
What is (London) dispersion, dipole-dipole, hydrogen bond (not really a bond, but a very strong dipole-dipole), and ion-ion bond?
Weakest IMF to the Strongest IMF's.
What is dispersion, dipole-dipole, hydrogen bonding, and ionic bonds?
The most common linear and bent shape molecule (one for each shape).
What is CO2 (linear) and H2O (bent)?
An example of each a trigonal pyramidal bond and a tetrahedral bond.
What is NH3 (trigonal pyramidal) and
CH4 (tetrahedral)?
Definition of molecular polarity.
What is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment?