An exam or examination is an official test that shows your knowledge or ability in a particular subject. Exam is the word most commonly used. Examination is more formal and is used mainly in written English.
Strong Acids and Bases. Acids and bases that are completely ionized when dissolved in water are called strong acids and strong bases There are only a few strong acids and bases, and everyone should know their names and properties. These acids are often used in industry and everyday life. The concentrations of acids and bases are often expressed in terms of pH, and as an educated person, you should have the skill to convert concentrations into pH and pOH.
The strength of an acid refers to its ability or tendency to lose a proton (H +). A strong acid is one that completely ionizes (dissociates) in a solution. In water, one mole of a strong acid HA dissolves yielding one mole of H + (as hydronium ion H 3 O +) and one mole of the conjugate base, A â .or concentrated solutions of strong acids with a pH less than about zero, the Hammett acidity function is a better measure of acidity than the pH. Sulfonic acids, which are organic oxyacids, are a class of strong acids. A common example is p-toluenesulfonic acid (tosylic acid).