Compressed air from a can is used to clean computer keyboardsa) Use ideas about particles to explain how a gas causes a pressure on the inside of a container

a) A gas causes pressure on the inside of a container due to the movement and collision of its particles. Here's a step-by-step explanation:

1. Gases are composed of a large number of particles (atoms or molecules) that are in constant, random motion.

2. These particles are moving in all directions and at different speeds.

3. When these particles hit the walls of their container (like the inside of a compressed air can), they exert a force on that area of the wall.

4. Pressure is defined as the force exerted per unit area. So, the gas pressure on the inside of the container is the result of these particles colliding with the container walls.

5. The more frequently the particles collide with the walls, and the faster they are moving when they collide, the greater the pressure they exert.

6. In a compressed air can, the gas particles are packed closely together, which means they collide with the container walls more frequently, resulting in a high pressure.

7. When the can is opened, the gas particles rush out from the high pressure inside the can to the lower pressure of the surrounding air, which is how the compressed air can is used to clean computer keyboards.