KINETIC MOLECULAR THEORY

1. gases consist of tiny particles. the distance is larger than the size of particles themselves.

2. no attractive force exists, particles occupy all available space

3. moves in a linear motion but change direction upon collision. they collide frequently and are perfectly elastic

4. average kinetic energy is the same for all gases at a given temp, and its value is directly proportional to the kelvin temperature

kinetic molecular theory

temperature

measure of kinetic energy of gas particles

volume

amount of space occupied by gas particles

pressure

amount of force exerted per unit area. gases exert force to its container

barometer

instrument to measure atmospheric pressure

atmospheric pressure

composed of gases that exerts force. denser close to earth and less dense afar.