A good contract bookkeeper is able to: 1  Set up accounting systems and software properly. 2  Enter transactions. 3  Perform checks, reconciliations and end of year processes.  Ensure they are up to speed with legislative requirements and management 1  reports. Undertake payroll duties and compliance.
An active metal is a metal that displaces hydrogen from an acid. Examples of active metals include magnesium, zinc and iron. This type of reaction is also called a single displacement reaction where the active metal 'displaces' the hydrogen from the acid. Examples of reactions involving acids and active metals. 1  Hydrochloric acid + Magnesium â Magnesium chloride + Hydrogen.
Chemical Reactions: Single Displacement. A displacement reaction is a reaction where an element replaces, or displaces, a less active element in a compound. Iron will replace copper in a copper II chloride solution, producing iron II chloride and copper. combustion reaction is an exothermic reaction that occurs when oxygen and another element or compound are combined. A basic combustion reactions occurs when carbon in the form of charcoal reacts with oxygen to form carbon dioxide and heat. Thank you for watching.