According to the Kinetic Theory, the particles of an ideal gas collide with each other without losing any kinetic energy i.e. their collisions are said to be perfectly elastic. read more
According to the Kinetic Theory, the particles of an ideal gas collide with each other without losing any kinetic energy i.e. their collisions are said to be perfectly elastic. So, answering your question, yes they do collide but without losing any kinetic energy. read more
An ideal gas is a theoretical gas composed of many randomly moving point particles that do not interact except when they collide elastically. The ideal gas law is the equation of state of an ideal gas. read more