Question

On the basis of molecular theory, explain why gas has neither definite shape nor definite volume.

Answer 1

Based on the molecular theory, a gas has neither definite shape nor definite volume because:

• Also, gases are also known as fluids.
• Highly loosely bound molecular arrangement due to negligible inter-molecular forces of attraction.
• They show the highest inter-molecular spaces in comparison to solids & liquids.
• Due to this fact, gaseous molecules can move freely in all directions with the highest kinetic energy.
• Since they require a closed vessel to contain them so, they neither possess a definite shape nor a definite volume of their own.