Intermolecular Forces and Molecules - Interactive Lecture Demonstration A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines.

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Título Intermolecular Forces and Molecules - Interactive Lecture Demonstration
Descrição 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.
Assunto Química
Nível Licenciatura - Introdução
Tipo Demonstração
Duração 60 minutos
Respostas Incluídas Não
Idioma English
Palavras Chave Electrostatic potential, VSEPR, dipoles, electronegativity, intermolecular forces, ion-pairing, molecule geometry, partial charges, phase changes, polar and non-polar molecules
Simulações Polaridade da molécula (HTML5), Polaridade molecular, Formas das Moléculas (HTML5), Molecule Shapes, Estado da Matéria (HTML5), Estados da matéria, Estados da Matéria: Fundamentos (HTML5), States of Matter: Basics, Sugar and Salt Solutions

Autores Ted Clark, Julia Chamberlain
Escola / Organização PhET
Submetido 05-11-2014
Atualizado 26-07-2017