Water is an inorganic compound with the chemical formula H2O. It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance. It is the main constituent of Earth 's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).

2025年1月28日 · Water (H₂O) is a remarkable substance that exists in three primary states: liquid, solid, and gaseous. Each form exhibits unique characteristics and plays a crucial role in the Earth’s ecosystems and human activities. Liquid water is the most familiar state to us, covering about 71% of the Earth’s surface as oceans, rivers, lakes, and rain.

Water (H2O) is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound [20] and is described as the "universal solvent " …

2025年3月4日 · Water, substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful of compounds and has the important ability to dissolve many other substances, which was essential to the development of …

水 （化学式：H 2 O）是一种 无机化合物，在 常温 且无 杂质 中是无色 [1] 无味不导电的透明 液体，也会通过 蒸发 产生 气态 的 水蒸气 （这种蒸发可以发生在任何 温度 下，同时取决于与 空气 接触的 表面积 和 湿度 差）。 在 标准大气压 下，水的 凝固点 是0 °C （32 °F；273 K）， 沸点 是100 °C（212 °F；373 K）。 水是 宇宙 中最常见的 氢化物 之一，也是最常见的 氧化物 ——因为氢和氧分别是 宇宙中第一和第三丰富的元素，是否含有液态水也是 行星适居性 的一个主要指 …

液态水 (Liquid Water, H₂O)就是常用水，水（H₂O）是由 氢 、 氧 两种元素组成的 无机物，在 常温 常压 下为无色无味的透明液体。 [1] 水是最常见的物质之一，是包括人类在内所有生命生存的重要资源，也是生物体最重要的组成部分。 水在生命演化中起到了重要的作用。 人类很早就开始对水产生了认识，东西方古代朴素的 物质观 中都把水视为一种基本的组成元素，五行之一；西方古代的 四元素说 中也有水。 水在常温常压下为无色无味的透明液体。 在自然界， 纯水 是非常 …

Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water is a liquid at standard ambient temperature and ...

维也纳标准平均海水 （英语：Vienna Standard Mean Ocean Water） （VSMOW）的熔点在273.1500089 (10) K / 0.000089 (10)℃ ，沸点在373.1339 K / 99.9839 ℃。 在历史上，人们曾利用水的性质来定义温度的标度。 值得注意的是， 热力学温标 、 摄氏温标 和 华氏温标 都是，或曾经是用水的熔沸点来定义的。

Water is a molecule made of two hydrogen atoms and one oxygen atom. Its chemical formula is H 2 O. Like other liquids, water has a surface tension, so a little water can make drops on a surface, rather than always spreading out to wet the surface. [22]

Other names: Water vapor; Distilled water; Ice; H2O; Dihydrogen oxide; steam; Tritiotope Permanent link for this species. Use this link for bookmarking this species for future reference.