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The 79 pages that link to Water, each with the reason it gives.

• Covalent bondBroader topic: Its polar covalent O–H bonds help explain water's distinctive properties.

• HydrolysisNarrower topic: Water supplies the atoms incorporated into hydrolysis products.

• Hydrogen bondRelated: Its extensive hydrogen-bond network contributes to cohesion, surface tension, and unusual thermal behavior.

• PhotosynthesisRelated: Oxygenic photosynthesis oxidizes water to provide electrons and release oxygen.

• Chemical formulaBroader topic: H₂O illustrates how a molecular formula gives exact atom counts.

• Molecular formulaBroader topic: Its formula H₂O directly records the atom counts of a small molecule.

• SolventBroader topic: It is the most familiar solvent and dissolves many ionic and polar substances.

• Dipole momentBroader topic: Its polar O–H bonds combine into a nonzero molecular dipole because of its bent geometry.

• Hydrogen peroxideCompared with: Water is a stable decomposition product of hydrogen peroxide, not an equivalent oxidizer.

• Latent heatRelated: Its large phase-change energy makes water a major carrier of latent heat.

• Specific heat capacityBroader topic: Its high specific heat capacity moderates temperature changes in oceans and living systems.

• Carbonic acidRelated: Water dissolves carbon dioxide and enables the proton transfers involving carbonic acid.

• Tetrahedral molecular geometryCompared with: It shares a tetrahedral electron-domain arrangement but has a bent molecular shape.

• Chemical weatheringRelated: Water transports reactants and products and participates directly in many weathering reactions.

• Melting pointRelated: At ordinary atmospheric pressure, pure water melts at 0 °C.

• Blood plasmaRelated: Water makes up most plasma and dissolves many of the substances it carries.

• SalivaRelated: Water is saliva’s main solvent and supports its cleansing and lubricating action.

• BileRelated: Water carries bile’s dissolved and suspended components into the intestine.

• BreadRelated: It hydrates flour proteins and starch, enabling dough formation.

• HydroxideRelated: Hydroxide differs from water by one proton and a net negative charge.

• Lone pairBroader topic: Two oxygen lone pairs help make water bent and polar.

• Aqueous solutionBroader topic: Its molecular polarity makes it an effective solvent for many ionic and polar substances.

• Latent heat of vaporizationBroader topic: Water's high vaporization energy strongly affects its cooling and climate roles.

• Specific gravityRelated: Water is the usual reference substance for liquids and solids.

• Molecular hydrogenCompared with: Water has a permanent electric dipole and far richer rotational emission than nonpolar H₂.

• Newtonian fluidBroader topic: Liquid water is approximately Newtonian under many everyday flow conditions.

• Conjugate acidRelated: Water accepts a proton to form hydronium in aqueous acid–base reactions.

• NutrientRelated: It is an essential nutrient that supports transport, reactions, and temperature regulation.

• MoleculeBroader topic: Its bent shape and polarity make it a defining example of molecular behavior.

• Crystal waterNarrower topic: Crystal water retains the identity and composition of water molecules.

• HydrophobicityRelated: Water’s polarity and hydrogen bonding shape both hydrophobic effects and surface wetting.

• ATP hydrolysisRelated: Water is a reactant that participates in ATP hydrolysis.

• MacronutrientRelated: Water is needed in large amounts, though it provides no dietary energy.

• Molecular polarityBroader topic: Its bent geometry prevents the two polar O–H bond dipoles from canceling.

• VSEPR theoryBroader topic: Two lone pairs on oxygen help explain water’s bent shape and compressed bond angle.

• HydroniumNarrower topic: Water accepts the proton that creates hydronium.

• AmphoterismBroader topic: Water can donate a proton to form hydroxide or accept one to form hydronium.

• SteamNarrower topic: Steam is water whose molecules have entered the gas phase.

• Enthalpy of vaporizationBroader topic: Hydrogen bonding gives water an unusually high vaporization enthalpy among small molecules.

• Soft drinkCompared with: Plain water lacks the added sweetness and flavor typical of soft drinks.

• SweatRelated: Water makes up most sweat and absorbs heat as it evaporates.

• Ammonium bicarbonateBroader topic: Water vapor is the third product in the salt’s thermal decomposition.

• Chemical compoundBroader topic: Water is a familiar molecular compound with distinctive solvent and physical properties.

• Puff pastryRelated: Water hydrates flour and later supplies much of the vapor that lifts the pastry.

• Absorption refrigeratorRelated: In ammonia–water refrigerators, water absorbs ammonia vapor.

• Oat milkRelated: Water extracts and carries soluble oat components through the drink.

• Shortcrust pastryRelated: Only a small amount is needed to bring shortcrust crumbs together.

• CytosolRelated: Water makes up most cytosol and dissolves many of its ions and metabolites.

• FoodCompared with: Water is essential and often consumed with food, but is usually classified separately from food.

• IftarRelated: Many Muslims begin iftar by drinking water to end the day’s abstention.