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Titel Intermolecular Forces and Molecules - Interactive Lecture Demonstration
Beschreibung 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.
Thema Chemie
Niveau Hochschule - Grundstudium
Typ Demonstration
Dauer 60 Minuten
Antwort enthalten Nein
Sprache Englisch
Stichworte Electrostatic potential, VSEPR, dipoles, electronegativity, intermolecular forces, ion-pairing, molecule geometry, partial charges, phase changes, polar and non-polar molecules
Simulation(en) Dipolmoleküle (HTML5), Molekulare Polarität, Molekülgeometrien (HTML5), Molekülgeometrien, Aggregatszustände (HTML5), Aggregatzustände, Aggregatszustände: Grundbegriffe (HTML5), Aggregatzustände (Grundlagen), Zucker- und Salzlösungen

Autoren Ted Clark, Julia Chamberlain
Schule / Organisation PhET
Eingereicht am 05.11.14
Aktualisiert am 26.07.17