Acid

An acid (from the Latin acidus/acēre meaning sour) is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts. An aqueous solution of an acid has a pH of less than 7 and is colloquially also referred to as 'acid' (as in 'dissolved in acid'), while the strict definition refers only to the solute. An acid usually contains a hydrogen atom bonded to a chemical structure that is still energetically favorable after loss of H⁺ (a positive hydrogen ion or proton). A lower pH means a higher acidity, and thus a higher concentration of positive hydrogen ions in the solution. Chemicals or substances having the property of an acid are said to be acidic.

There are three common definitions for acids: the Arrhenius definition, the Brønsted-Lowry definition, and the Lewis definition. The Arrhenius definition defines acids as substances which increase the concentration of hydrogen ions (H⁺), or more accurately, hydronium ions (H₃O⁺), when dissolved in water. The Brønsted-Lowry definition is an expansion to include solvents other than water: an acid is a substance which can act as a proton donor. By this definition, any compound which can be deprotonated can be considered an acid. Examples include alcohols and amines which contain O-H or N-H fragments. A Lewis acid is a substance that can accept a pair of electrons to form a covalent bond. Examples of Lewis acids include all metal cations, and electron-deficient molecules such as boron trifluoride and aluminium trichloride.

Stuart

Stuart may refer to:

Famous Stuarts

Places

Other uses

Groovies' Greatest Grooves

Groovies' Greatest Grooves is a 1989 compilation album by U.S. rock band the Flamin' Groovies, originally released by Sire Records. The tracks were selected by Rolling Stone Senior Writer Michael Goldberg and freelance rock critic Michael Snyder, who also co-wrote the liner notes. Goldberg and Snyder wanted to emphasize the Groovies' original material. It collected tracks from throughout the group's career, and showcased their versatility and changing styles throughout the years. It is notable for being one of the few CDs released in the CD+G format.

Track listing

References

Long Island

Coordinates: 40°48′N 73°18′W / 40.8°N 73.3°W / 40.8; -73.3

Long Island is an island located just off the northeast coast of the United States and a region within the U.S. state of New York. Stretching east-northeast from New York Harbor into the Atlantic Ocean, the island comprises four counties: Kings and Queens (these form the New York City boroughs of Brooklyn and Queens, respectively) to the west; then Nassau and Suffolk to the east. However, many people in the New York metropolitan area (even those living in Queens and Brooklyn) colloquially use the term "Long Island" (or "The Island") exclusively to refer to the Nassau-Suffolk county area collectively, which is mainly suburban in character. North of the island is Long Island Sound, across from which lie the states of Connecticut and a small part of Rhode Island.

With a Census-estimated population of 7,804,968 in 2014, constituting nearly 40% of New York State's population, Long Island is the most populated island in any U.S. state or territory, and the 18th-most populous island in the world (ahead of Ireland, Jamaica, and Hokkaidō). Its population density is 5,571 inhabitants per square mile (2,151/km²). If Long Island geographically constituted an independent metropolitan statistical area, it would rank fourth most populous in the United States; while if it were a U.S. state, Long Island would rank 13th in population and first in population density.

Love You

Love You may refer to:

In music:

In television and film:

See also