Some common mouth problems include. 1  Cold sores - painful sores on the lips and around the mouth, caused by a virus. 2  Canker sores - painful sores in the mouth, caused by bacteria or viruses. 3  Thrush - a yeast infection that causes white patches in your mouth.
-Explain why energy input is necessary to extract a metal from its ore In order to break the chemical bonds in the compounds, energy such as heat or electricity is required to break these bonds and extract the metal. -Identify why there are more metals available for people to use then there were 200 years ago.etal + Oxygen Metal Oxide Metals with a low reactivity such as gold and silver are used in jewellery because of their shiny lustre and the fact that they do not tarnish easily. with a particular emphasis on current developments in the use of metals. This is because the metal tends to want to keep its electrons more.
ALUMINIUM This page starts by looking at the extraction of aluminium from its ore, bauxite, including some economic and environmental issues. It finishes by looking at some uses of aluminium.Extracting aluminium from bauxite Introduction Aluminium is too high in the electrochemical series (reactivity series) to extract it from its ore using carbon reduction. The temperatures needed are too high to be economic. Instead, it is extracted by electrolysis.The ore is first converted into pure aluminium oxide by the Bayer Process, and this is then electrolysed in solution in molten cryolite-another aluminium compound. The aluminium oxide has too high a melting point to electrolyse on its own.t finishes by looking at some uses of aluminium. Extracting aluminium from bauxite Introduction Aluminium is too high in the electrochemical series (reactivity series) to extract it from its ore using carbon reduction. The temperatures needed are too high to be economic. Instead, it is extracted by electrolysis.