Alloys and their Densities

An alloy is a substance that's made by combining two or more metallic elements, this is usually done to get a stronger material. Some alloys include:
-Bronze, which is made of copper, tin and aluminium
-Crown gold, which is made of gold,silver and copper
-Steel, which is made of iron and carbon.
 
Different alloys have different densities because of the different masses and volumes in elements that make them up. Alloys will have higher densities if the mass or volume of its elements is bigger.