Factors Affect Gas Pressure

• What are gas particles free to do in a container?

  Move about in random directions
• What happens when gas particles hit the walls of a container?

  They rebound and change direction
• What do gas particles exert when they collide with container walls?

  A force that creates pressure
• How is pressure defined in terms of force and area?

  Pressure is force per unit area
• What two factors mainly determine total pressure in a gas?

  Number of collisions and energy of collisions
• What happens to gas particles when temperature increases?

  They gain kinetic energy and move faster
• How does increased temperature affect pressure in a gas?

  Pressure increases due to more collisions
• What happens to pressure when concentration of gas particles increases?

  Pressure increases due to more collisions
• What is the effect of reducing the volume of a gas container?

  Pressure increases due to more collisions
• How does the distance between collisions change with volume reduction?

  Particles travel shorter distances between collisions
• What happens to pressure in a flexible container like a balloon?

  Volume changes instead of pressure increasing
• What occurs when the number or force of collisions increases in a balloon?

  The balloon expands rather than increasing pressure
• What should you be aware of regarding expandable containers?

  They complicate pressure calculations
• What are the main factors affecting gas pressure?

  • Temperature: Higher temperature increases pressure
  • Concentration: More particles increase pressure
  • Volume: Smaller volume increases pressure
• How do temperature, concentration, and volume interrelate in gas pressure?

  • Increased temperature leads to faster particles
  • Higher concentration results in more collisions
  • Reduced volume causes particles to collide more frequently