Grade 11 · Week 10 · U3
Essential question: Why do substances with similar molecular mass have different boiling points?
Two molecular liquids evaporate at very different rates.
Build an initial model and explanation for: Why do substances with similar molecular mass have different boiling points?
Record observations, questions, an initial model, and one claim that could be tested. Use these concepts where relevant: dispersion; dipole-dipole; hydrogen bonding; IMF.
Study and explain the week's core ideas: dispersion; dipole-dipole; hydrogen bonding; IMF
Open text on intermolecular forces.
Revise Monday's model. Add two evidence-backed annotations and explain one limitation or uncertainty.
Graph boiling point vs structure descriptors.
Show units, setup, calculation or graph reasoning, then write what the quantitative evidence can and cannot establish about: Why do substances with similar molecular mass have different boiling points?
Evaporation dataset or supervised water/alcohol-free safe simulation.
Use the course safety charter. If supervision, facilities, materials, or conditions are not appropriate, use the supplied-data/simulation alternative rather than improvising hazardous procedures.
Record variables or design constraints, procedure/model, observations/data, and one revision you would make after reviewing the evidence.
Answer the essential question: Why do substances with similar molecular mass have different boiling points?
Submit a claim, at least two specific pieces of evidence, reasoning that connects them, one limitation/counterclaim, and a correction note for any essential concept below 80%.
Select one artifact from this week and explain why it is trustworthy evidence of growth.