Chem 210 Module 2 Exam Well-Structured Study Notes
Containing Verified Correct Answers And Clear Topic
Explanations (2025–2026 Edition)
1. a higher melting or boiling point indicates the molecule has: stronger inter-
molecular forces.
2. What is the shape of water?: Bent. The bond angle is 104.5 degrees.
3. What is autoionization, and how is it important for water?: Autoionization is
the ability of a compound to react with itself to form ions. One water molecule reacts
with a second molecule to form two ions: H3O+ and OH-. These ions exist in small
amounts in pure water and influence the chemistry of water.
4. Name the three non-covalent forces discussed in this module.: 1. Dipole-di-
pole forces, 2. Hydrogen bonding, and 3. London dispersion forces
5. What type of non-covalent interaction is known as the strongest dipole-di-
pole force?: hydrogen bonds
6. How does the strength of London forces change with increasing molecular
, weight? Explain briefly.: As molecular weight increase, the strength of London
forces also increase. This is due to the increased number of electrons in larger mol-
1/4
Containing Verified Correct Answers And Clear Topic
Explanations (2025–2026 Edition)
1. a higher melting or boiling point indicates the molecule has: stronger inter-
molecular forces.
2. What is the shape of water?: Bent. The bond angle is 104.5 degrees.
3. What is autoionization, and how is it important for water?: Autoionization is
the ability of a compound to react with itself to form ions. One water molecule reacts
with a second molecule to form two ions: H3O+ and OH-. These ions exist in small
amounts in pure water and influence the chemistry of water.
4. Name the three non-covalent forces discussed in this module.: 1. Dipole-di-
pole forces, 2. Hydrogen bonding, and 3. London dispersion forces
5. What type of non-covalent interaction is known as the strongest dipole-di-
pole force?: hydrogen bonds
6. How does the strength of London forces change with increasing molecular
, weight? Explain briefly.: As molecular weight increase, the strength of London
forces also increase. This is due to the increased number of electrons in larger mol-
1/4
