Describe the main properties of a gas. How are these predicted by kinetic molecular theory?
Step 1 of 3
The kinetic theory describes a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their many collisions with each other and with the walls of the container.
The main properties of a gas are
One major characteristic of gases is that they expand on their own to completely fill their container. So, if you ever want to know the volume of a gas, all you need to know is the volume of the container that it's in.
Another characteristic of gases is that they can be compressed. This is because the particles in gases are very far apart. The particles in solids and liquids are so close together that they are difficult (if not impossible) to compress. Brake hydraulics work so well because of this. If liquids were easy to compress, the brake fluid in your car would just 'squish together' instead of working to stop your car. So, the more distance between the particles of a substance, the easier it is to compress. And gas particles are very far apart, so they are easy to compress.
Kinetic theory makes many assumptions...
Textbook: Introductory Chemistry
Author: Nivaldo J Tro