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.
The Reaction of Metals with Water. P otassium, sodium, lithium and calcium react with cold water, see alkali metals and alkaline earth metals. Metals in the reactivity series from magnesium to iron react with steam-H2O(g) but not water-H2O(l).The reaction forms the metal oxide and hydrogen gas. You must know the test for hydrogen gas. magnes ium + steam magnesium oxide + hydrogen.Mg(s) + H2O(g) MgO(s) + H2(g).alumin ium + steam aluminium oxide + hydrogen.etals in the reactivity series from magnesium to iron react with steam-H2O(g) but not water-H2O(l). The reaction forms the metal oxide and hydrogen gas. You must know the test for hydrogen gas. magnes ium + steam magnesium oxide + hydrogen. Mg(s) + H2O(g) MgO(s) + H2(g). alumin ium + steam aluminium oxide + hydrogen.