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Intermolecular Force

Questions

QuestionAnswer
How do dipole- dipole attractions increase when the molecules are similar size and mass? An increase with polarity
Why do london forces increase with molecular size? Large atoms and molecules are easier polarized than small ones
How do high melting point and boiling point compare? The bigger the size of the molecule the higher the melting point and the boiling point.
What is a Hydrogen Bond? Special case of dipole-dipole forces
Hydrogen Bond property 1 Higher melting point and higher boiling point
Hydrogen Bond property 2 Higher enthalpy of fusion and higher enthalpy of vapor
Hydrogen Bond property 3 higher viscosity
Hydrogen Bond property 4 lower vapor pressure and lower volatility
Which is higher the enthalpy of vapor or the enthalpy of fusion? Enthalpy of vapor
What happens to the vapor pressure when the intermolecular forces are strong? The lower the vapor pressure
How does vapor pressure increase with a liquid? Increase in temperature
Why is a liquid consider volatile? When it is easily vaporized
What happens to a substance if the intermolecular forces are strong? the less volatile they are
What is the h-bond responsible for? 1 anomaly high boiling point and high melting point
What is the h-bond responsible for? 2 Ice is less dense than water
What is the h-bond responsible for? 3 Characteristic of DNA
What happens to viscosity if there are strong intermolecular forces? It increases
What happens to surface tension if there are strong intermolecular forces? The surface area increases
cohesive forces molecule-molecule attraction
adhesive forces molecule- wall attraction
Created by: Dragonian89
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