Question

How does the size of molecules affect their macroscopic properties? Why is understanding the sizes of molecules important?

Answer 1

It is very important to know the particle sizes of molecules because, Diffusion rates are dependent on molecular sizes because larger molecules diffuse slower than smaller molecules. The sizes of the particles involved in the diffusion are important because they closely relate to the concepts of heat and energy in the context of diffusion. It takes more energy and heat to move a larger object than a smaller one, so larger particles require more heat from their surroundings.