[cvc121]

I understand that as volume increases, gas molecules are more likely to collide into each other and the walls of the container, causing pressure to go down. However,  I am very confused as to why (at the particle level) an increase in pressure changes the volume significantly initially but as the pressure continues to increase, the changes in volume is less significant.

Thanks. All help is very much appreciated!

[billnotgatez]

@cvc121

that as volume increases, gas molecules are more likely to collide into each other

I am not sure what you mean here

And the rest of the post seems to need some more information for people to understand for sure what you are asking

You have not state this but based on your thread title and content of your post you might mean that

With temperature and the number of molecules held constant what the relationship of volume and pressure as they change assuming Ideal Gas

What are your thoughts
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[Borek]

I understand that as volume increases, gas molecules are more likely to collide into each other

Quite the opposite. Increasing volume means making the distances between molecules larger, so they collide less often.