Topic explanation

Standard explanation

Gas pressure arises from the repeated collisions of moving gas molecules with the walls of their container.

Key points

• p = FA
• pressure ↔ rate of momentum transfer per unit area
• Temperature Connection: Consider gas molecules moving inside a container. When a molecule strikes a wall, its momentum comp
• Formula / Key Relation: p = FA Microscopically: pressure ↔ rate of momentum transfer per unit area
• Pressure is a statistical effect of molecular momentum transfer.

Labelled diagram