Question

a piece of chalk can be broken in small particles by hammering but a piece of iron cannot be briken into small particles by hammering. Which characteristics of the particles of matter is illustrated by these observation?

Answer 1

that the iron have more compact molecules and have less moleculer space between them and have mor forve of attraction between them as compared to chalk

Answer 2

the particles are so thightly packed or they are very rigid so they cannot be broken