Question

Explain the properties of alloys are different from those of constituent metals

Answer 1

When a metal is mixed with another element, which may be a metal or a non metal such that a new substance of homogeneous composition is obtained, the substance obtained is known as an alloy. An alloy is thus a homogeneous mixture of two or more metals, or a metal and a non metal. The properties of an alloy are different from that of combining elements. For example when iron is mixed with Carbon, nickel and chromium, stainless steel is obtained which is hard and does not rust. Other examples of alloys include brass, bronze, solder etc.

1. Alloys are stronger than the metals from which they are made.
2. Alloys are harder than the constituents metals.
3. Alloys ere more resistant to corrosion.
4. Alloys have lower melting points than the constituent metals.
5. Alloys have lower electrical conductivity than pure metals.