Question

A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?

Answer 1

Hint: Iron is a metal. It’s shape can be changed. The process of changing the shape of iron by hammering a hot piece of iron is called forging. The force due to hammering changes the shape of the iron piece. The desired shape can be molded using forging.

Complete step-by-step answer:
Iron when heated the molecules of it attain high thermal energy. The malleability of iron will help it to mould the necessary shape. The arrangement of the iron crystals changes and it deforms. If the temperature is hot enough then the strain developed by hammering the hot iron will be relieved by recrystallization.
Additional Information
Metals and non-metals are generally classified based on 6 characters. They are Lustre (appearance), hardness, malleability, ductility, heat conduction and conduction of electricity.
i. Metals usually have metallic shine whereas nonmetals do not have.
ii. All metals except potassium and sodium are very hard compared to nonmetals.
iii. Metals are malleable.
iv. Metals are ductile. They can be stretched or drawn into thin wires.
v. Metals are good conductors of heat and electricity.
vi. All metals are solid except mercury and gallium.
vii. All metals except potassium and sodium have high density.

Note: Malleability is a property of metals by which it can be beaten into sheets. Almost all metals are highly malleable except zinc, antimony and arsenic. Among all the metals gold has the highest malleability.