WATER PDF, EPUB, EBOOK Melissa Stewart | 48 pages | 01 Oct 2014 | National Geographic Kids | 9781426314742 | English | London, United Kingdom Water - Wikipedia The root of these anomalies lies in the electronic structure of the water molecule. The water molecule is not linear but bent in a special way. The two hydrogen atoms are bound to the oxygen atom at an angle of Hydrogen atoms in water molecules are attracted to regions of high electron density and can form weak linkages, called hydrogen bonds , with those regions. This means that the hydrogen atoms in one water molecule are attracted to the nonbonding electron pairs of the oxygen atom on an adjacent water molecule. The structure of liquid water is believed to consist of aggregates of water molecules that form and re-form continually. This short-range order, as it is called, accounts for other unusual properties of water, such as its high viscosity and surface tension. An oxygen atom has six electrons in its outer valence shell, which can hold a total of eight electrons. When an oxygen atom forms a single chemical bond, it shares one of its own electrons with the nucleus of another atom and receives in return a share of an electron from that atom. When bonded to two hydrogen atoms, the outer electron shell of the oxygen atom is filled. The electron arrangement in the water molecule can be represented as follows. Each pair of dots represents a pair of unshared electrons i. This situation can also be depicted by placing the water molecule in a cube. This electronic structure leads to hydrogen bonding. Water Article Media Additional Info. Article Contents. Home Science Chemistry. Print print Print. Table Of Contents. Facebook Twitter. Give Feedback External Websites. Let us know if you have suggestions to improve this article requires login. External Websites. Articles from Britannica Encyclopedias for elementary and high school students. Steven S. Author of Chemical Principles and many others. See Article History. Water is the most plentiful compound on Earth and is essential to life. Although water molecules are simple in structure H 2 O , the physical and chemical properties of water are extraordinarily complicated. Top Questions. In the hydrologic cycle, water is transferred between the land surface, the ocean, and the atmosphere. The numbers on the arrows indicate relative water fluxes. Get exclusive access to content from our First Edition with your subscription. Subscribe today. The Hoover Dam on the Colorado River at the border of Nevada and Arizona demonstrates how natural resources of water can be harnessed for a variety of purposes, including human consumption, irrigation, and industry. Water treatment systems are important for desalinating seawater so it can be used for human consumption and for purifying water for industrial use. A water molecule is made up of two hydrogen atoms and one oxygen atom. A single oxygen atom contains six electrons in its outer shell, which can hold a total of eight electrons. When two hydrogen atoms are bound to an oxygen atom, the outer electron shell of oxygen is filled. Water is a polar molecule and is attracted to other polar molecules. Thus, droplets, or beads, of water form on a nonpolar surface because water molecules adhere together instead of adhering to the surface. Load Next Page. Istanbul , Turkish İstanbul , formerly Constantinople , ancient Byzantium , largest city and principal seaport of Turkey. It was the capital of both the Byzantine Empire and the Ottoman Empire. The old walled city of Istanbul stands on a triangular peninsula between Europe and Asia. Sometimes as a bridge , sometimes as a barrier, Istanbul for more than 2, years has stood between conflicting surges of religion, culture , and imperial power. For most of those years it was one of the most coveted cities in the world. The name Byzantium may derive from that of Byzas, leader of the Greeks from the city of Megara who, according to legend , captured the peninsula from pastoral Thracian tribes and built the town about bce. In ce , having razed the town for opposing him in a civil war, the Roman emperor Septimius Severus rebuilt it, naming it Augusta Antonina in honour of his son. In ce , when Constantine the Great dedicated the city as his capital, he called it New Rome. The coinage, nevertheless, continued to be stamped Byzantium until he ordered the substitution of Constantinopolis. Through a series of speech permutations over a span of centuries, this name became Istanbul. Until the Turkish Post Office officially changed the name in , however, the city continued to bear the millenary name of Constantinople. The old city contains about 9 square miles 23 square km , but the present municipal boundaries stretch a great deal beyond. Around their slopes are ranged many of the mosques and other historic landmarks that were collectively designated a UNESCO World Heritage site in The Golden Horn is a deep drowned valley about 4. Like the forces of history, the forces of nature impinge upon Istanbul. The Black Sea waters thrust southward through the Bosporus, but beneath them the salty warm waters of the Mediterranean push northward as a powerful undercurrent running through the same channel. The lodos , or southwest wind, can raise storms on the Sea of Marmara. Fire, earthquake, riot, and invasion have ravaged Istanbul many times, more than 60 conflagrations and numerous earthquakes being important enough to have been recorded in history. The traces of these disasters, though, have been swept away in waves of intensive urban development: today wide roadways run through the historic quarters of the old city, and unpaved alleys overhung with old wooden houses coexist with modern high-rise buildings, office parks, and shopping malls. Portions of the walls of Stamboul remain. The walls are 4. The higher inner wall is about 30 feet 9 metres high and 16 feet 5 metres thick and is studded with foot metre towers about feet 55 metres apart. Of 92 turrets originally raised on the outer wall, 56 are still standing. The sea walls were built in Only short sections of their foot- 9-metre- high masonry still remain along the Golden Horn. Intact, these walls had towers and 14 gates. The walls along the Sea of Marmara, which stretch about 5 miles 8 km from Seraglio Point, curving around the bottom of the peninsula to join the land walls, had towers; they were, however, only about 20 feet 6 metres high, because the Marmara currents provided good protection against enemy landings. Most of these walls still stand. Within the city walls are the seven hills, their summits flattened through the ages but their slopes still steep and toilsome. Istanbul | History, Points of Interest, & Map | Britannica In addition to the idioms beginning with water. Often waters. Our land is watered by the All-American Canal. See how many words from the week of Oct 12—18, you get right! Idioms for water above water , out of embarrassment or trouble, especially of a financial nature: They had so many medical bills that they could hardly keep their heads above water. Words nearby water watch over , watch pocket , watchstrap , watchtower , watchword , water , waterage , water arum , water ash , water back , water bag. Words related to water drink , rain , bathe , sprinkle , dilute , inundate , soak , flood , irrigate , moisten , wash , spray , thin , wet , saliva , aqua , tears , rainwater , drench , souse. Example sentences from the Web for water The soil is also very dry, which counterintuitively makes it harder for water to infiltrate. California wildfires may give way to massive mudslides Ula Chrobak September 17, Popular Science. Soggy coastal soils? Notable Events of the Nineteenth Century Various. Oriental Women Edward Bagby Pollard. Harper's New Monthly Magazine Various. Marie Alexander Pushkin. It is a neutral substance, an effective solvent for many compounds, and is used as a standard for many physical properties. Formula: H 2 O Related adjective: aqueous Related combining forms: hydro-, aqua-. See high water , low water. See also water down. Derived forms of water waterer , noun waterish , adjective waterless , adjective water-like , adjective. A clear, colorless, odorless, and tasteless liquid essential for most plant and animal life and the most widely used of all solvents. Any of the liquids that are present in or passed out of the body, such as urine, perspiration, tears, or saliva. The fluid that surrounds a fetus in the uterus; amniotic fluid. Finding your favorite water at retail is easy when you're one of the nation's largest bottled water companies—with one national brand and nine regional brands spread across the United States. We offer complete beverage refreshment in a variety of sizes under our popular brand names and private label products at some of your favorite retail locations. Look for us on shelf the next time you shop! We've updated our Privacy Policy. See what has changed at link. By continuing to use our site or by providing us with your personal information, you indicate your consent to our updated Privacy Policy. About Us. Mountain Valley Spring Water Premium water in glass bottles. We are your total beverage provider. Bottled Water Delivery Convenience delivered. Breakroom Supplies Go beyond coffee and bottled water. Water Filtration Let it flow. Where to Buy. Welcome to the Albuquerque Water Utility Authority It's about complete beverage refreshment and convenience delivered directly to your home or office. Everything you need to stay refreshed your way — all day long and all year round. Enjoying great-tasting bottled water is a staple in our everyday lives, but getting it to our homes and offices can be a hassle. Save time with bottled water delivered to your door by our friendly and knowledgeable Route Sales Representatives — whether it's a 5-gallon returnable bottle or a lb.