Intermolecular Forces and Molecules - Interactive Lecture Demonstration Une étoile d'or indique, les activités de haute qualité fondées sur la recherche qui suivent les directives de conception PhET.


Download Tous les fichiers sous forme d'un zip compressé.


Titre Intermolecular Forces and Molecules - Interactive Lecture Demonstration
Description This Interactive Lecture Demonstration Guide has the following goals. Students will be able to: • Use VSEPR theory to construct common molecules; • Sketch electron density and identify partial charges based on molecule geometry and electronegativity; • Distinguish between bond and molecule dipoles; • Classify molecules as polar or non-polar; • Compare and contrast permanent and induced dipoles; • Identify hydrogen-bonding, and discuss its origin in terms of molecule geometry and electronegativity; • Explain properties, such as boiling or melting point, by considering different intermolecular forces; • Relate the relative strength of intermolecular forces with melting point or boiling point data, and with particle-level representations of substances at different temperatures; • Describe the dynamic particle motion in a liquid, including the arrangement and motion of molecules accompanying hydrogen-bonding and ion-dipole interactions; • Explain ion-pairing at the particle-level, and describe how this affects colligative properties.
Sujet Chimie
Niveau Premier cycle - Intro
Type Démonstration
Durée 60 minutes
Réponses incluses Non
Langue Anglais
Mots clés Electrostatic potential, VSEPR, dipoles, electronegativity, intermolecular forces, ion-pairing, molecule geometry, partial charges, phase changes, polar and non-polar molecules
Simulation(s) Polarité de la molécule (HTML5), Polarité de la molécule, VSEPR (HTML5), VSEPR, Etats de la matière (HTML5), États de la matière, Etats de la matière: les bases (HTML5), States of Matter: Basics, Solutions de sucre et de sel


Auteur(s) Ted Clark, Julia Chamberlain
Email de contact phethelp@colorado.edu
Ecole / Organisation PhET
Date de soumission 05/11/14
Date de mise à jour 26/07/17