Ideal gas law deviations, confusing myself

[riseNshine]

I tried reading some old threads, but keep getting confused. Can someone help make this more concise and tell me if this is right:

Ideal gas law assumptions include:
no volume
no IM forces
elastic (Kinetic energy and momentum conserved)
low Pressure
high Temperature

Deviations from ideal gas law:
high pressure
low Temperature

if Temperature decreases:
-IM becomes significant so less Pressure than expected
-smaller volume than predicted

if significantly increase pressure:
-larger volume because size becomes large compared to distance between them

if moderately increase pressure:
-volume less than predicted (why?? I read this in Kaplan and don't understand why V would be less with moderate increases but high with significant pressure increases)

if increase volume:
IM forces increases, so less pressure than expected

if decrease volume:
IM forces increases to higher pressure than expected


I feel like I'm confusing some concepts. Can anyone help? Thanks!!!!!!

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[IhateVR]

I tried reading some old threads, but keep getting confused. Can someone help make this more concise and tell me if this is right:

Ideal gas law assumptions include:
no volume
no IM forces
elastic (Kinetic energy and momentum conserved)
low Pressure
high Temperature

Deviations from ideal gas law:
high pressure
low Temperature

if Temperature decreases:
-IM becomes significant so less Pressure than expected
-smaller volume than predicted

if significantly increase pressure:
-larger volume because size becomes large compared to distance between them

if moderately increase pressure:
-volume less than predicted (why?? I read this in Kaplan and don't understand why V would be less with moderate increases but high with significant pressure increases)

if increase volume:
IM forces increases, so less pressure than expected

if decrease volume:
IM forces increases to higher pressure than expected


I feel like I'm confusing some concepts. Can anyone help? Thanks!!!!!!

Gas can't be considered massless in extreme pressure so volume is larger than ideal.
With moderate pressure, you get IM forces resulting in a lower volume than ideal until the pressure is so high that mass becomes apparent.