CHM 1046 – Practice Questions with
Step-by-Step Solutions | Florida
Chemistry II (2025/2026)
1. Solvation - ANSWER ✔ When a solvent is surrounding
a molecule/ion
2. Hydration - ANSWER ✔ When the solvent surrounding
a molecule/ion is water (H2O).
3. How do you compare the strength of non-polar
molecules? - ANSWER ✔ The molecules have to have
the same molecular formula and polarity. If they have
different MWs, the molecule with a higher MW feels
LDF more than the other.
4. Boiling Point - ANSWER ✔ Indication of the strength
of intermolecular forces.
, The higher the BP, the stronger the intermolecular
forces.
Vapor pressure = external pressure
Depends on temperature and pressure.
5. Surface Tension - ANSWER ✔ A measure of how
difficult it is to stretch or break the surface of a liquid.
The higher the energy to break the surface, the higher
the surface tension.
6. S -> L - ANSWER ✔ Melting
(∆H = +)
Endothermic
Requires Energy
Breaking intermolecular forces
7. L -> G - ANSWER ✔ Boiling / Evaporation
(∆H = +)
Endothermic
Requires Energy
Completely breaking intermolecular forces
,8. S -> G - ANSWER ✔ Sublimation
Endothermic
Requires the most energy
9. L -> S - ANSWER ✔ Freezing
Exothermic
Releases energy
Making intermolecular forces
10. G -> L - ANSWER ✔ Condensation
Exothermic
Releases energy
Making intermolecular forces
11. G -> S - ANSWER ✔ Deposition
Exothermic
Releases energy
Making intermolecular forces
, 12. Vapor Pressure - ANSWER ✔ Vapor = Gas, Pressure
= Pressure of gas
The higher the vapor pressure, the more molecules that
escape (the weaker the intermolecular forces, the lower
the BP).
The higher the vapor pressure, the lower the BP
13. Volatile - ANSWER ✔ How a liquid goes into the gas
phase.
The more volatile, the more it is in the gas phase (the
lower the BP).
More volatile, the lower the BP, the higher the vapor
pressure
14. Non-volatile - ANSWER ✔ No vapor pressure, does
not boil
Ex) salt & sugar
15. Adhesive Forces - ANSWER ✔ Molecules that stick
(attract) to another surface.
Will be in a U-shape
Step-by-Step Solutions | Florida
Chemistry II (2025/2026)
1. Solvation - ANSWER ✔ When a solvent is surrounding
a molecule/ion
2. Hydration - ANSWER ✔ When the solvent surrounding
a molecule/ion is water (H2O).
3. How do you compare the strength of non-polar
molecules? - ANSWER ✔ The molecules have to have
the same molecular formula and polarity. If they have
different MWs, the molecule with a higher MW feels
LDF more than the other.
4. Boiling Point - ANSWER ✔ Indication of the strength
of intermolecular forces.
, The higher the BP, the stronger the intermolecular
forces.
Vapor pressure = external pressure
Depends on temperature and pressure.
5. Surface Tension - ANSWER ✔ A measure of how
difficult it is to stretch or break the surface of a liquid.
The higher the energy to break the surface, the higher
the surface tension.
6. S -> L - ANSWER ✔ Melting
(∆H = +)
Endothermic
Requires Energy
Breaking intermolecular forces
7. L -> G - ANSWER ✔ Boiling / Evaporation
(∆H = +)
Endothermic
Requires Energy
Completely breaking intermolecular forces
,8. S -> G - ANSWER ✔ Sublimation
Endothermic
Requires the most energy
9. L -> S - ANSWER ✔ Freezing
Exothermic
Releases energy
Making intermolecular forces
10. G -> L - ANSWER ✔ Condensation
Exothermic
Releases energy
Making intermolecular forces
11. G -> S - ANSWER ✔ Deposition
Exothermic
Releases energy
Making intermolecular forces
, 12. Vapor Pressure - ANSWER ✔ Vapor = Gas, Pressure
= Pressure of gas
The higher the vapor pressure, the more molecules that
escape (the weaker the intermolecular forces, the lower
the BP).
The higher the vapor pressure, the lower the BP
13. Volatile - ANSWER ✔ How a liquid goes into the gas
phase.
The more volatile, the more it is in the gas phase (the
lower the BP).
More volatile, the lower the BP, the higher the vapor
pressure
14. Non-volatile - ANSWER ✔ No vapor pressure, does
not boil
Ex) salt & sugar
15. Adhesive Forces - ANSWER ✔ Molecules that stick
(attract) to another surface.
Will be in a U-shape
