If you accept the idea that matter is made up of discrete atoms and molecules, g

Question

If you accept the idea that matter is made up of discrete atoms and molecules, gases can be visualized as consisting of: atoms or molecules in continual motion, colliding with each other and the walls of their container, and very far apart on the average relative to their diameters. In terms of your observations of gasses and of the work you did m section 17.11 what are the justifications for this mental picture or model? Why does the identical model not work well for liquids and solids? What evidence do you have that the distances between molecules are not far apart relative to their diameters?

Explanation / Answer

a) When ever a substance in gaseous phase is used in a particular volume, it spreads throughout the volume uniformly which means they are in continuous motion.

Whenever a gas is enclosed in a container with a manometer, the manometer always reports a reading proving that gases apply pressure on collisions.

We can easily pass through a gaseous medium, proving they have huge gaps in between.

b) Solids and liquids have fixed volume and rate of diffusion is also quite less.

There is only a certain amount of solute which can be dissolved in a given amount of liquid proving spaces between them are very limited.

We are not able to pass our hand through a solid till we are a karate expert, proves their molecules are not far apart.

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