Ice

water iceicyicingice crystalsice plantglacier iceice IVice VIice Xphases of ice
Ice is water frozen into a solid state.wikipedia
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Water

H 2 Oliquid wateraqueous
Ice is water frozen into a solid state.
Clouds are formed from suspended droplets of water and ice, its solid state.

Solid

solidsssolid state
Ice is water frozen into a solid state.
The atoms in a solid are tightly bound to each other, either in a regular geometric lattice (crystalline solids, which include metals and ordinary ice) or irregularly (an amorphous solid such as common window glass).

Polar ice cap

polar ice capspolar icepolar cap
It is abundant on Earth's surface – particularly in the polar regions and above the snow line – and, as a common form of precipitation and deposition, plays a key role in Earth's water cycle and climate.
A polar ice cap or polar cap is a high-latitude region of a planet, dwarf planet, or natural satellite that is covered in ice.

Ice Ih

ice I h hexagonal iceI h
Virtually all the ice on Earth's surface and in its atmosphere is of a hexagonal crystalline structure denoted as ice I h (spoken as "ice one h") with minute traces of cubic ice denoted as ice I c . The most common phase transition to ice I h occurs when liquid water is cooled below 0 °C (273.15 K, 32 °F) at standard atmospheric pressure.
Ice I h (pronounced: ice one h, also known as ice-phase-one) is the hexagonal crystal form of ordinary ice, or frozen water.

Ice sculpture

ice carvingice sculptingice
Ice is used in a variety of ways, including cooling, winter sports and ice sculpture.
Ice sculpture is a form of sculpture that uses ice as the raw material.

Ice sheet

ice sheetscontinental glacierice-sheet
Sufficiently thin ice sheets allow light to pass through while protecting the underside from short-term weather extremes such as wind chill.
An ice sheet, also known as a continental glacier, is a mass of glacial ice that covers surrounding terrain and is greater than 50000 km2.

Crystal

crystallinecrystalscrystalline solid
It possesses a regular crystalline structure based on the molecule of water, which consists of a single oxygen atom covalently bonded to two hydrogen atoms, or H–O–H.
The word crystal derives from the Ancient Greek word κρύσταλλος, meaning both "ice" and "rock crystal", from κρύος, "icy cold, frost".

Iceberg

icebergstabular icebergice
For instance, icebergs containing impurities (e.g., sediments, algae, air bubbles) can appear brown, grey or green.
An iceberg or ice mountain is a large piece of freshwater ice that has broken off a glacier or an ice shelf and is floating freely in open water.

Properties of water

waterH 2 Owater molecule
Ice may be any one of the 18 known solid crystalline phases of water, or in an amorphous solid state at various densities.
It is the most abundant substance on Earth and the only common substance to exist as a solid, liquid, and gas on Earth's surface.

Water vapor

water vapourvaporevaporation
It may also be deposited directly by water vapor, as happens in the formation of frost. Ice, water, and water vapour can coexist at the triple point, which is exactly 273.16 K (0.01 °C) at a pressure of 611.657 Pa.
Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice.

Ice Ic

Ice I c cubic iceI c
Virtually all the ice on Earth's surface and in its atmosphere is of a hexagonal crystalline structure denoted as ice I h (spoken as "ice one h") with minute traces of cubic ice denoted as ice I c . The most common phase transition to ice I h occurs when liquid water is cooled below 0 °C (273.15 K, 32 °F) at standard atmospheric pressure.
Ice I c (pronounced "ice one c" or "ice icy") is a metastable cubic crystalline variant of ice.

Mercury (planet)

Mercuryplanet MercuryMercurio
In the Solar System, ice is abundant and occurs naturally from as close to the Sun as Mercury to as far away as the Oort cloud objects.
On November 29, 2012, NASA confirmed that images from MESSENGER had detected that craters at the north pole contained water ice.

Ice XI

XI
Ices XI, XIII, and XIV are hydrogen-ordered forms of ices I h, V, and XII respectively.
Ice XI is the hydrogen-ordered form of I h, the ordinary form of ice.

Oort cloud

Öpik-Oort CloudÖpik–Oort cloud20,000–50,000 AU
In the Solar System, ice is abundant and occurs naturally from as close to the Sun as Mercury to as far away as the Oort cloud objects.
If analyses of comets are representative of the whole, the vast majority of Oort-cloud objects consist of ices such as water, methane, ethane, carbon monoxide and hydrogen cyanide.

Amorphous ice

vitreous iceamorphoushigh-density amorphous ice
When water is cooled rapidly (quenching), up to three different types of amorphous ice can form depending on the history of its pressure and temperature.
Common ice is a crystalline material where the molecules are regularly arranged in a hexagonal lattice whereas amorphous ice is distinguished by a lack of long-range order in its molecular arrangement.

Ice II

II
Ice II is a rhombohedral crystalline form of ice with a highly ordered structure.

Ice VII

Ice-VIItype VII iceVII
Ice VII is a cubic crystalline form of ice.

Sublimation (phase transition)

sublimationsublimessublimate
The transition from ice to water is melting and from ice directly to water vapor is sublimation.
Snow and ice sublime, although more slowly, at temperatures below the freezing/melting point temperature line at 0 °C for most pressures; see line below triple point.

Noctilucent cloud

noctilucent cloudsNoctilucentmesospheric cloud
Low-density ASW (LDA), also known as hyperquenched glassy water, may be responsible for noctilucent clouds on Earth and is usually formed by deposition of water vapor in cold or vacuum conditions.
Night clouds or noctilucent clouds are composed of tiny crystals of water ice up to 100 nm in diameter and exist at a height of about 76 to 85 km, higher than any other clouds in Earth's atmosphere.

Ice XV

Ice XV is a crystalline form of ice, the proton-ordered form of ice VI.

Clathrate hydrate

gas hydratesclathrate hydratesgas hydrate
The World Meteorological Organization defines several kinds of ice depending on origin, size, shape, influence and so on. Clathrate hydrates are forms of ice that contain gas molecules trapped within its crystal lattice.
Clathrate hydrates, or gas clathrates, gas hydrates, clathrates, hydrates, etc., are crystalline water-based solids physically resembling ice, in which small non-polar molecules (typically gases) or polar molecules with large hydrophobic moieties are trapped inside "cages" of hydrogen bonded, frozen water molecules.

Triple point

triple point of waterhigh pressureTriple Point cell
Ice, water, and water vapour can coexist at the triple point, which is exactly 273.16 K (0.01 °C) at a pressure of 611.657 Pa.
The single combination of pressure and temperature at which liquid water, solid ice, and water vapor can coexist in a stable equilibrium occurs at exactly 273.1600 K and a partial vapor pressure of 611.657 Pa.

Icebreaker

icebreakingice breakerice breaking
Navigation through areas of sea ice occurs in openings called "polynyas" or "leads" or requires the use of a special ship called an "icebreaker".
An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters, and provide safe waterways for other boats and ships.

Ice XVI

Ice XVI is the least dense (0.81 g/cm) experimentally obtained crystalline form of ice.

Density

densedensitiesmass density
The density of ice is 0.9167 –0.9168 g/cm 3 at 0 °C and standard atmospheric pressure (101,325 Pa), whereas water has a density of 0.9998 –0.999863 g/cm 3 at the same temperature and pressure.