Question

If you hammer an iron nail ,chalk piece water In a tub what will you observe

Answer 1

Answer:

We can break a piece of chalk easily because particles of matter in a chalk are somewhat loosely packed. Though it is a solid but then also its particles are loosely packed and on application of force it easily breaks. 

While in the case of an iron piece, the particles of matter are very very tightly packed and it requires great great force to break it up into pieces.