Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Hydrogen Bonds00:26

Hydrogen Bonds

134.3K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
134.3K
Hydrogen Bonds01:04

Hydrogen Bonds

15.0K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
15.0K
Phase Transitions02:31

Phase Transitions

23.3K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.3K
Phase Diagrams02:39

Phase Diagrams

50.4K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.4K
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

20.3K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
20.3K
What is an Experiment?01:12

What is an Experiment?

19.1K
An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two variables. When one variable causes change in another, we call the first variable the explanatory or independent variable. The affected variable is called the response or dependent variable. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The...
19.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

High-pressure powder x-ray diffraction cell for soft materials.

The Review of scientific instruments·2026
Same author

Isotope Effect on the Hydrogen Ordering from Ice V to Ice XIII via a Partially Ordered Intermediate.

The journal of physical chemistry. B·2026
Same author

<i>N</i>-Methylated Nucleobases Crystal Structures and π-π Stacking Interactions.

Molecules (Basel, Switzerland)·2026
Same author

Dynamics of coalescence in hyperquenched glassy water probed by x-rays.

The Journal of chemical physics·2026
Same author

<i>In Situ</i> X-ray Diffraction during Ball Milling Reveals Poorly Crystalline Metastable Intermediates during the Formation of Disordered Rocksalt Oxyfluorides.

Journal of the American Chemical Society·2026
Same author

Zn-Ion Storage in an Anode-Protected High-Performance Aqueous Organic Zinc Ion Battery.

Small (Weinheim an der Bergstrasse, Germany)·2026

Related Experiment Video

Updated: Feb 10, 2026

Identification of Plant Ice-binding Proteins Through Assessment of Ice-recrystallization Inhibition and Isolation Using Ice-affinity Purification
09:43

Identification of Plant Ice-binding Proteins Through Assessment of Ice-recrystallization Inhibition and Isolation Using Ice-affinity Purification

Published on: May 5, 2017

9.2K

Experiments indicating a second hydrogen ordered phase of ice VI.

Tobias M Gasser1, Alexander V Thoeny1, Lucie J Plaga2

  • 1Institute of Physical Chemistry , University of Innsbruck , 6020 Innsbruck , Austria .

Chemical Science
|May 22, 2018
PubMed
Summary

Researchers discovered a new hydrogen ordered ice phase, ice XVIII, by cooling ice VI at high pressures. This new ice phase is more ordered and stable than ice XV at lower temperatures.

More Related Videos

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

9.0K
The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants
09:36

The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants

Published on: May 8, 2015

10.0K

Related Experiment Videos

Last Updated: Feb 10, 2026

Identification of Plant Ice-binding Proteins Through Assessment of Ice-recrystallization Inhibition and Isolation Using Ice-affinity Purification
09:43

Identification of Plant Ice-binding Proteins Through Assessment of Ice-recrystallization Inhibition and Isolation Using Ice-affinity Purification

Published on: May 5, 2017

9.2K
Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

9.0K
The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants
09:36

The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants

Published on: May 8, 2015

10.0K

Area of Science:

  • Materials Science
  • Physical Chemistry
  • Crystallography

Background:

  • Recent years have seen the experimental preparation of five new ice phases.
  • Three of these new phases are hydrogen-ordered counterparts of previously known disordered ice phases.

Purpose of the Study:

  • To investigate hydrogen ordering in ice VI samples under high pressure.
  • To characterize a potential new hydrogen-ordered polymorph of ice VI.

Main Methods:

  • Calorimetry
  • Dielectric relaxation spectroscopy
  • Raman spectroscopy
  • Powder X-ray diffraction

Main Results:

  • Evidence suggests a new hydrogen-ordered polymorph related to ice VI, distinct from ice XV.
  • The new phase exhibits a higher activation energy (45 kJ mol⁻¹) and greater order than ice XV.
  • Hydrogen disordering occurs at a lower temperature (≈103 K) compared to ice XV.

Conclusions:

  • A new thermodynamically stable region for this ice phase exists below 103 K.
  • The newly identified phase is provisionally named ice β-XV, to be relabeled ice XVIII upon crystal structure determination.