Never just say a molecule is "more stable." Instead, say it has "stronger Coulombic attractions" or "more polarizable electron clouds."
Usually, only one point on the entire exam is dedicated specifically to sig figs—don't let them paralyze you, but keep them in mind for the FRQs.
While the curriculum covers nine units, these three areas usually carry the most weight and cause the most stress:
When answering long-form questions, follow this template to ensure you get full points:
State your direct answer (e.g., "The boiling point of NH3cap N cap H sub 3 is higher.")
Cite the data provided or the specific intermolecular forces involved. Reasoning: Connect the two. "Because NH3cap N cap H sub 3
This is the "why" behind everything. If you can explain how polarities and forces (like London Dispersion or Hydrogen bonding) affect boiling points and solubility, you’ve won half the battle.