Question detail
How does the viscosity of hydrocarbons change with increasing molecular size?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Carbon compounds as fuels and feedstock
Question
How does the viscosity of hydrocarbons change with increasing molecular size?
Answer
The viscosity of hydrocarbons increases as the size of the molecules increases. Larger molecules have more surface area, leading to stronger intermolecular forces that make them flow less easily.
Explanation
This question assesses the student's ability to connect molecular size with viscosity, a key property of hydrocarbons. It requires an understanding of how molecular structure influences physical characteristics.
Common mistake
Misunderstanding Hydrocarbon Properties
Students often think that all hydrocarbons have the same boiling point, viscosity, and flammability regardless of their molecular size.
Emphasize that the properties of hydrocarbons, such as boiling point, viscosity, and flammability, change with the size of their molecules. Larger molecules generally have higher boiling points and viscosities.
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