# Are the collisions of gas molecules elastic?

## Are the collisions of gas molecules elastic?

Gas molecules influence each other only by collision; they exert no other forces on each other. They do not stick to each other. All collisions between gas molecules are perfectly elastic; all kinetic energy is conserved.

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What type of collision is occurring between these gas particles?

Collisions between gas particles and between particles and the container walls are elastic collisions . An elastic collision is one in which there is no overall loss of kinetic energy.

What happens when the particles of a gas collide?

Gas pressure is caused by the collisions of the gas particles with the inside of the container as they collide with and exert a force on the container walls. Then the gas is heated up. As the temperature of the gas increases, the particles gain kinetic energy and their speed increases.

### Why are the collisions of particles of real gases elastic?

This is due to the fact that while colliding a molecule has to face the intermolecular forces that exist between it and other such molecules. They will change its momentum as to not have an elastic collision. Certainly, elastic collision eases our calculation, so we take that for an ideal gas.

### How does kinetic theory relate to elastic collisions?

Energy would still be conserved, since the wall molecules would gain kinetic energy. But the derivation of the ideal gas law would only work for elastic collisions if the wall and gas were the same temperature.

Are there collisions between noble gases with no molecules?

Noble gases which have no molecules and hence neither rotational nor vibrational modes may enjoy perfectly elastic collisions up to pretty high temperatures. Thanks for contributing an answer to Chemistry Stack Exchange!

What happens when two rubber balls collide?

An elastic collision occurs when the two objects “bounce” apart when they collide. Two rubber balls are a good example. In an elastic collision, both momentum and kinetic energy are conserved. Almost no energy is lost to sound, heat, or deformation.