Why are gases more viscous at higher temps?

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Gases exhibit increased viscosity at higher temperatures due to the rise in kinetic energy of their particles. As temperature increases, gas particles move more rapidly, leading to a higher frequency of collisions. This increased collision rate restricts the distance particles can travel without interacting with one another, resulting in greater viscosity. The analogy of a spacecraft overcoming gravitational pull effectively illustrates how increased kinetic energy enhances fluidity in gases.

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chiddler
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I'd expect that since they carry more kinetic energy, they are more fluid.

Thanks!
 
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Why does them carrying more kinetic energy suggest that they're more fluid?
 
Because they can move past each other more easily. Similar to a faster speed of a spacecraft being able to overcome gravitational pull.
 
The more kinetic energy gases get, they also increase the number of collisions between the particles. This increased number of collisions is the reason why gases are more viscous at higher temperatures, because their particles are not able to go very far without colliding.
 

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