The pH scale is a scale that is used to represent the level of acidity in a solution. A solution with a pH of 7 is neutral, while a solution with a pH below 7 is an acid, and a solution with a pH above 7 is a base. An acid dissociates, or breaks apart, and donates protons, or hydrogen ions, in an aqueous solution, while a base donates hydroxide ions in a solution. Water, for example, is neutral with a pH of 7. When acids are added, they release more hydrogen ions into the solution, and this causes the pH of the solution to drop.
Two days later, EA CEO John Riccitiello stated that Spore would be released sometime before the holidays. On February 12, 2008, Electronic Arts announced in an official press release that the official release date would be September 5, 2008 for Europe and September 7, 2008 for North America.
The term virus (poison) was coined by Pasteur. Emil von Behring received the Nobel Prize in 1901 for his work with Shibasaburo Kitasato on the antitoxin serum for diptheria. Paul Ehrlich in 1912, announced the discovery of an effective cure for syphilis, the first chemotherapeutic agent for a bacterial disease.lexander Fleming discovered penicillin in 1928 whilst working at St Mary's Hospital in London and published the first paper on it the following year. He received the Nobel Prize in 1945, with Howard Florey and Ernst Chain, for their work on Penicillium notatum.