photo.jpg

### Properties of gases. The kinetic-molecular theory explains the physical properties of gases: The kinetic-molecular theory applies only to ideal gases, although ideal gases do not actually exist, many gases behave nearly ideally if pressure is not very high and temperature is not very low. The k...

### Properties of gases. The kinetic-molecular theory explains the physical properties of gases: The kinetic-molecular theory applies only to ideal gases, although ideal gases do not actually exist, many gases behave nearly ideally if pressure is not very high and temperature is not very low. The kinetic-molecular theory accounts for the physical properties of gases, including: #### Expansion - Gases do not have a definite shape or volume - They completely fill any container in which they are enclosed - They take its shape - A gas transferred from a one-liter vessel, to a two-liter vessel will expand to fill the larger volume. - The kinetic-molecular theory explains these facts. - According to the theory, gas particles move rapidly in all directions - (assumption 3) - With no significant attraction between them (assumption 4) #### Fluidity - Because the attractive forces between gas particles are insignificant - (assumption 4) - Gas particles glide easily past one another. - This ability flow causes gases to behave as liquids do. - Because liquids and gases flow easily - They are both referred to as fluids.