Activity 3.3 NCERT Class 10 Science, Chapter 3 Metals and Non-metals
Activity 3.3 asks us to strike a metal with a hammer and observe what happens.
Metal become thin, and it's surface area increases.
When we hit metal with a hammer or other hard objects metal spreads into a thin sheet. We call this property of metal Malleability.
Inference/conclusion: This experiment shows that metals are malleable.
Blacksmith: A blacksmith ( Lohar) heats an iron rod in the furnace and then beats with a hammer until he gets the desired shape.
Steel sheet on the roof is also an application of this property.