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.
Weak bases exist in chemical equilibrium much in the same way as weak acids do, with a base dissociation constant (Kb) indicating the strength of the base. For example, when ammonia is put in water, the following equilibrium is set up: Bases that have a large K b will ionize more completely and are thus stronger bases.n chemistry, a weak base is a chemical base that does not ionize fully in an aqueous solution. As BroenstedâBrÃ¸nsted lowry bases are proton, acceptors a weak base may also be defined as a chemical base in which protonation is. Incomplete this results in a relatively pH ph compared to strong. bases