Question

1 Kilogram of Iron occupies less space compared to 1 kilogram of sponge. Why?
A. Iron has less density than sponge
B. Iron and sponge have equal densities
C. Iron has more density than sponge
D. None of the above

Answer 1

Hint: Density is a proportion of mass per volume. The average density of an object is equivalent to its total mass divided by its all total volume. An object produced using a similarly dense material, (for example, iron) will have less volume than an object of equivalent mass produced using some less dense substance, (for example, water).

Complete answer:
We have two materials here one is Iron which is a metal and a sponge which is non-metal. Metals have generally high densities comparable to Non-metals whereas sponge is a non-metal. Multiplication of Density and volume is equal to Mass
Heavy metals are commonly characterized as metals with generally high densities, atomic weights, or atomic numbers. The soonest referred to metals- common metals, for example, iron. Metals have higher densities due to the strong intermolecular force of attraction between the constituent particles. They have less intermolecular space between the constituent particles thus more mass is moved in a given volume.

Hence, the correct option is (C). Iron occupies less space because it has high density.

Note: S.I. units a kilogram is a unit of mass, not weight. (Weight is estimated in units of Pascals.) Nevertheless, in a similar kilogram of mass, the volume of Iron is smaller than the volume of Sponge. This implies Iron has a greater density than Sponge.