Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Cohesion01:07

Cohesion

55.7K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
55.7K
States of Water01:23

States of Water

53.2K
Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart.
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
53.2K
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

29.1K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
29.1K
Surface Tension of Fluid01:22

Surface Tension of Fluid

479
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
479
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

13.0K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
13.0K
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

1.8K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
1.8K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Learning mappings between equilibrium states of liquid systems using normalizing flows.

The Journal of chemical physics·2025
Same author

Symmetrized Drude Oscillator Force Fields Improve Numerical Performance of Polarizable Molecular Dynamics.

Journal of chemical theory and computation·2023
Same author

Tuning nonequilibrium phase transitions with inertia.

The Journal of chemical physics·2023
Same author

Static Disorder has Dynamic Impact on Energy Transport in Biomimetic Light-Harvesting Complexes.

The journal of physical chemistry. B·2022
Same author

Dielectric response of thin water films: a thermodynamic perspective.

Chemical science·2022
Same author

A Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect Excitons.

ACS nano·2022

Video Experimental Relacionado

Updated: Sep 8, 2025

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
08:16

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

Published on: March 13, 2017

14.0K

Estructura local similar al hielo en la superficie del agua líquida

Nathan L Odendahl1,2, Phillip L Geissler1,2

  • 1Department of Chemistry, University of California, Berkeley, California 94720, United States.

Journal of the American Chemical Society
|June 13, 2022
PubMed
Resumen

Las superficies de agua líquida exhiben estructuras únicas parecidas al hielo, reveladas a través de simulaciones. Estos hallazgos explican los comportamientos de la superficie y amplían la comprensión de la capa de cuasi hielo por encima del punto de fusión del agua.

Más Videos Relacionados

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
08:01

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

Published on: August 18, 2022

3.2K
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.2K

Videos de Experimentos Relacionados

Last Updated: Sep 8, 2025

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
08:16

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

Published on: March 13, 2017

14.0K
A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
08:01

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

Published on: August 18, 2022

3.2K
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.2K

Área de la Ciencia:

  • Química Física
  • Ciencias de los materiales
  • Ciencias de la superficie

Sus antecedentes:

  • Las superficies de agua líquida muestran comportamientos únicos distintos del agua a granel.
  • Estudios previos reportaron estratificaciones y sesgos de orientación en la interfaz aire-agua.
  • Faltaba un marco general que explicara estos fenómenos de superficie.

Objetivo del estudio:

  • Para aclarar los orígenes y las relaciones de las características estructurales distintas en la superficie del agua líquida.
  • Para establecer una analogía entre la estructura de la superficie del agua líquida y el hielo cristalino.
  • Para proporcionar una comprensión unificada del comportamiento de la superficie del agua.

Principales métodos:

  • Utilizó avanzadas simulaciones por computadora para modelar la interfaz aire-agua.
  • Densidad molecular analizada y orientación perpendicular a la interfaz.
  • Investigó las correlaciones laterales en la geometría de la red de enlaces de hidrógeno.

Principales resultados:

  • Demostró similitudes estructurales significativas entre el agua líquida y las superficies de hielo.
  • Se identificaron dominios parecidos al hielo en la interfaz aire-agua, que se extienden de 2 a 3 diámetros moleculares.
  • Se observó una estratificación característica compartida de la densidad y la orientación molecular.
  • Encontró similitudes estructurales paralelas en la geometría de la red de enlaces de hidrógeno.

Conclusiones:

  • La estructura de la superficie del agua líquida se puede entender a través de una analogía con la cara basal del hielo cristalino.
  • Los hallazgos amplían las concepciones anteriores de estructuras similares al hielo en los límites del agua líquida.
  • Sugiere que la capa cuasi líquida en el hielo se convierte en una capa cuasi de hielo en el agua líquida por encima del punto de fusión.