A battery is a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction reaction.
Alloy steels are made of iron, carbon and other elements such as vanadium, silicon, nickel, manganese, copper and chromium. When other elements comprising metals and non-metals are added to carbon steel, alloy steel is formed.
Germany is a federal multiparty republic with two legislative houses.
Its government is headed by the chancellor (prime minister), who is elected by a majority vote of the Bundestag (Federal Assembly) upon nomination by the president
