- What is an alloy? How does it differ from an amalgam?
- Name the method most widely used for refining impure metals.
- Draw a labelled diagram to show the refining of copper.
1.An alloy is a homogenous mixture of two or more metals or a metal and small amounts of non-metals). The properties of an alloy are different from the properties of the constituent metals. An alloy of mercury metal with one or more other metals is known as an amalgam. For example-, a solution of sodium metal in liquid mercury metal is called sodium amalgam.
2.The most widely used method for refining impure metal is electrolytic refining.