Final answer:
Increasing pressure on a gas affects intermolecular forces by bringing gas particles closer and strengthening attractions between them.
Explanation:
When the pressure on the surface of a gas is increased, the intermolecular forces between the gas particles are affected. The particles get closer together due to the increased pressure, resulting in stronger intermolecular attractions. This is because higher pressure leads to more frequent collisions between the gas particles, enhancing the attractive forces between them.
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