Question

i) on the basis of molecular theory explain why a solid can't flow but can be heaped.

ii) on the basis of molecular theory, explain why a liquid can flow and it needs a vessel to contain.

iii) on the basis of molecular theory explain why a gas fills entire space available to it.



pls answer correctly.​

Answer 1

Answer:

i)Solid has high forces of attraction between their particles therefore they have very less space between them. They do not move but they vibrate. Therefore solids can't flow they can be heaped .

ii)model : The molecules in a liquid have more kinetic energy and more intermolecular spaces as compared to solids. ... Thus, molecules can change their positions within the liquid. So, liquids have definite volume, but not definite shape. They can flow and always take the shape of the containing vessel.

iii)Gases consist of molecules that have too little interactions between them to stick together. They just move along until they collide, either with a wall or with each other. ... So lets consider a case that the gas is under atmospheric pressure so it fills all the space available to it inder that pressure

Answer 2

Explanation:

1. because intramolecular space between them is very less comparing to liquid and gas. due to intramolecular space force between there particle is more . so they can't flow .

2. because intramolecular space between them is Intermidiate comparing to solid and gas. due to intramolecular space force between there particle is less.

intramolecular force in liquid enough to hold the molecules together but not as strong to keep neighbouring molecules at the fixed position. so they flow .

3 intramolecular space between them is very less. and intramolecular force between them is very less the force is not strong to keep neighbouring molecules at the fixed podition . so they freely move and fills entire space.

hope it is helpful for you.