Factors that 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 = force / area
• What two factors mainly determine total pressure in a gas?

  Number of collisions and energy of collisions
• How does temperature affect gas pressure?

  Pressure increases with temperature
• What happens to gas particles when heated?

  They gain kinetic energy and move faster
• What is the effect of increased concentration on gas pressure?

  Higher concentration leads to more collisions
• What happens to pressure if volume is decreased while keeping particles constant?

  Pressure increases as volume decreases
• How does a flexible container like a balloon behave with changes in temperature and concentration?

  It changes volume rather than pressure
• What happens to a balloon when the number or force of collisions increases?

  The balloon expands rather than increases pressure
• What are the relationships between temperature, concentration, volume, and pressure in gases?

  • Temperature increase: Pressure increases
  • Concentration increase: Pressure increases
  • Volume decrease: Pressure increases
• What complexities arise with expandable containers like balloons?

  • Changes in temperature and concentration affect volume
  • Increased collisions cause expansion, not pressure increase
  • Volume and pressure changes are interrelated