[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-665342-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-665342-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","water-phase-diagram-phase-diagrams-and-phase-transitions-overview","Water Phase Diagram - Phase Diagrams and Phase Transitions Overview","","Water phase diagrams summarize preferred physical states of water across temperature and pressure, describing phase boundaries where phases can coexist with equal Gibbs free energy. The material transitions from liquid to solid ice below 273 K and to gaseous water vapor above 373 K. Key concepts include triple points, critical points, metastable ice forms, amorphous water LDA/HDA, and supercritical water behavior. The document further discusses how density, viscosity, dielectric properties, dissociation, and near-critical density fluctuations drive observable changes such as opalescent turbidity.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & Report",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/water-phase-diagram-phase-diagrams-and-phase-transitions-overview/665342/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/water-phase-diagram-phase-diagrams-and-phase-transitions-overview/665342.png","ImageObject",300,407,{"name":42,"@type":43},"LangkahRina","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":52,"interactionType":53,"userInteractionCount":30},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What information do phase diagrams provide for water?","Question",{"text":62,"@type":63},"They show the preferred physical states of water at different temperatures and pressures and identify phase boundaries where two phases can coexist stably.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"What is a triple point in the water phase diagram?",{"text":67,"@type":63},"A triple point is where three phases stably coexist with identical Gibbs free energies and can abruptly transform into each other with slight changes in temperature or pressure.",{"name":69,"@type":60,"acceptedAnswer":70},"How does water behave beyond the critical point?",{"text":71,"@type":63},"Beyond the critical point, water becomes supercritical, where gas-like and liquid-like distinctions disappear and properties vary strongly with changing density.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},665342,1793298841,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,105,110,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":92,"show_sort_weight":93,"slug":94},"Exam",70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":106,"doc_module":4,"doc_module_name":25,"category_name":107,"show_sort_weight":108,"slug":109},7,"Healthcare",40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":112,"slug":113},8,30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":111,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":30,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":111,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":79,"read_time":117},962090893776,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Water Phase Diagram  \n Phase diagrams  \n The phase diagram of water  \n Density change  \n Triple points  \n The ice phases  \nPhase diagrams  \nPhase diagrams show the preferred physical states of matter at different temperatures and pressure. Within each phase, the material is uniform with respect to its chemical composition and physical state. At typical temperatures and pressures on Earth (marked by an 'E' below) water is a liquid, but it becomes solid (that is, ice) if its temperature is lowered below 273 K and gaseous (that is, water vapor)a if its temperature is raised above 373 K, at the same pressure. Each line (phase line)eon a phase diagram represents a phase boundary and gives the conditions when two phases may stably coexist in any relative proportions (having the same Gibbs free energy) . Here, a slight change in temperature or pressure may cause the phases to abruptly change from one physical state to the other. Where three phase lines join, there is a 'triple point', when three phases stably coexist (having identical Gibbs free energies),e but may abruptly and totally change into each other given aslight change in temperature or pressure. Under the singular conditions of temperature and pressure where liquid water, gaseous water and hexagonal ice stably coexist, there is a 'triple point' where both the boiling point of water and melting point of ice are equal. Four phase lines cannot meet at a single point. A 'critical point' occurs at the end of a phase line where the properties of the two phases become indistinguishable from each other, for example when, under singular conditions of temperature and pressure, liquid water is hot enough and gaseous water is under sufficient pressure that their densities are identical. Critical points are usually found at the high temperature end of the liquid-gas phase line.  \nThe phase diagram of water  \nThe phase diagram of water is complex,b ,f having a number of triple points and one, or possibly two, critical points. Many of the crystalline forms may remain metastable in much of the lowtemperature phase space at lower pressures. A thermodynamic model of water and  \nices Ih, III, V and VI [1320] and thermodynamic functions of the phase transitions [1658] have been described. The known ices can be divided, by cluster analysis of their structures [1717], into the low-pressure ices (hexagonal ice, cubic ice and ice-eleven) . the high pressure ices (iceseven, ice-eight and ice-ten) and the others (found in the relatively narrow range of moderate pressures between about 200-2000 MPa) . All phases that share phase boundaries with liquid water (ices Ih, III, V and VI and VII) have disordered hydrogen bonding. The phases with ordered hydrogen bonding are found at lower temperatures and are indicated in light blue below. The structural transformation conditions of some of these ices during compression have been described [1795] .  \nMouse over border for D2O phase lines  \nThe mean surface conditions on Earth,(also atmospheric conditions, Mars and Venus on mousing over Earth) are indicated. The complex central part of the phase diagram is expanded opposite. The critical point and the orange line in the ice-one phase space refer to the low-density (LDA) and highdensity (HDA) forms of amorphous water (ice) [16] . Although generally accepted and supported by diverse experimental evidence [754a, 861], the existence of this second, if metastable, critical point is impossible to prove absolutely at the present time and isdisputed by  \nsome [200, 618, 628, 754b, 1115] . The transition between LDA and HDA is due to the increased entropy and attractive van der Waals contacts in HDA compensating for the reduced strength of its hydrogen bonding.  \nThe high-pressure phase line between ice-ten (X) and ice-eleven (XI) [81] is still subject to experimental verification. The melting point line between supercritical water and high pressure ice has been established [691, 2096] . Ice VII possesseshigher and ","cbCaibQH1e822sXm","https://ap.wps.com/l/cbCaibQH1e822sXm","pdf",548252,"English","# Water Phase Diagram\n## Phase diagrams and phase boundaries\n## Density changes\n## Triple points and critical points\n## Ice phases and metastability\n## LDA/HDA amorphous water and disputed second critical point\n## Supercritical water properties","[{\"question\":\"What information do phase diagrams provide for water?\",\"answer\":\"They show the preferred physical states of water at different temperatures and pressures and identify phase boundaries where two phases can coexist stably.\"},{\"question\":\"What is a triple point in the water phase diagram?\",\"answer\":\"A triple point is where three phases stably coexist with identical Gibbs free energies and can abruptly transform into each other with slight changes in temperature or pressure.\"},{\"question\":\"How does water behave beyond the critical point?\",\"answer\":\"Beyond the critical point, water becomes supercritical, where gas-like and liquid-like distinctions disappear and properties vary strongly with changing density.\"}]","Water Phase Diagram - Phase Diagrams and Phase Transitions Overview | PDF"]