This resource appears to be designed to build towards this disciplinary core idea, though the resource developer has not explicitly stated so.
Comments about Including the Disciplinary Core Idea
The analysis questions provided for the lab in the section titled Processing the Data, focuses students on the key concept of how the forces between molecules in a substance affect the properties of the substance. In particular, the third question: “Which of the alcohols studied has the strongest attractions between its molecules? The weakest attractions? Explain, using the results of this experiment.” draws students attention to this concept. These questions should be used to ensure students have taken the opportunity to consider connections between the observed data and the electrical forces between the molecules based on their structures.
The analysis questions provide a clear connection of considering the forces between molecules as a means to explain the pattern of the data observed in the lab. The activity does not, however, provide the means for students to understand why the larger chain in 1-butanol would yield a greater change in temperature during evaporation and a higher boiling temperature. In order to fully understand this DCI, students will need further study on the relationship between the structure of matter and the interactions between the particles (i.e. intra- and intermolecular forces).