Name That Force
A hydrogen atom bonded to fluorine can form this strong IMF with another nearby molecule.
Hydrogen "bond"
A liquid with strong IMFs will have a high boiling point and a low value for this property.
Vapor pressure
Diamond and quartz are examples of this solid type.
Network covalent solids
The gas constant (R) has a value of 0.08206 when pressure is measured in this unit.
The overall principle behind chromatography is separation based on differences in this property.
Polarity
This is the only type of intermolecular force that exists in nonpolar molecules.
London Dispersion Forces
The temperature at which vapor pressure equals external pressure.
Boiling point
This type of solid has delocalized electrons allowing it to conduct electricity.
Metallic solid
Gases deviate most from ideal behavior under the conditions of ______ pressure and ______ temperature.
High pressure and low temperature
The material that moves through the stationary phase and carries the sample with it.
Mobile phase
The partial charges of polar molecules lead to this type of IMF.
Dipole-dipole
As ice melts, the temperature does this.
Remains the same.
These solids are brittle because when struck, like-charged ions repel each other.
Ionic solids
A heavier gas will effuse more slowly than a lighter gas according to this law.
Graham’s Law
The distance a substance travels divided by the distance the solvent front travels is called this value.
Rf value (retention factor)
When NaCl dissolves in water, this type of IMF forms between ions and water molecules.
Ion-dipole
As altitude increases, boiling point does this.
Decreases.
Dry ice (solid form CO2) is this classified as this type of solid, because only IMFs hold molecules to each other
Molecular solid (or Molecular Covalent Solid)
If a gas has behavior deviating from what is predicted by the ideal gas law, it is because it has this.
Intermolecular Forces
A very polar substance will have a ______ (high/low) Rf value on polar paper.
The strength of LDF increases with these two molecular factors.
1)number of electrons
2) surface area
On a phase diagram, the variables on the graph are temperature, and this.
Pressure
Substances with weak IMFs tend to be gases at room temperature because this dominates.
Kinetic energy (aka movement)
The volume of one mole of gas at STP.
22.4 Liters
While column chromatography can isolate large amounts, running a TLC is done first for this reason.
To find a suitable solvent (solvent ratios)