gas pressure 🎈

• What is the learning objective regarding gas pressure in this section?

  To explain gas pressure simply using words.
• How can you explain unfamiliar observations about gas pressure?

  In terms of particles.
• What happens to the air pressure in racing car tyres before a race?

  The air pressure increases as they heat up.
• Why do balloons get bigger as you blow them up?

  Because more air particles are added, increasing the volume.
• What happens to air particles inside a balloon when you blow it up?

  They move quickly in all directions and collide with each other and the rubber.
• What is gas pressure defined as?

  The force per unit area exerted by gas particles on the walls of a container.
• How does the number of particles affect pressure in a balloon?

  More particles cause more frequent collisions, increasing pressure.
• Why does adding more air increase the pressure inside a non-stretchy container?

  It causes more frequent collisions with the walls, increasing pressure.
• How does temperature affect gas pressure in a balloon?

  Higher temperature increases particle energy, leading to more collisions and higher pressure.
• What happens to a balloon when the temperature gets too high?

  The rubber cannot withstand the pressure and the balloon bursts.
• What occurs when a plastic bottle of air is placed in a freezer?

  The air particles cool down and move more slowly, decreasing pressure inside the bottle.
• Why does a plastic bottle collapse in the freezer?

  Because the pressure inside decreases and the outside pressure becomes higher.
• What happens when the bottle is taken out of the freezer?

  The air inside warms up and the pressure equalizes, returning the bottle to its normal shape.
• What is the effect of cooling gas particles in a bottle?

  They move more slowly and collide less often, decreasing pressure.
• What are the key concepts related to gas pressure?

  • Gas pressure is the force per unit area exerted by gas particles.
  • More particles lead to more collisions and higher pressure.
  • Higher temperature increases particle energy and pressure.
  • Cooling gas particles decreases pressure.
• What happens to the pressure inside a can of baked beans when it is heated?

  The pressure increases until the can explodes.
• How do gas particles exert pressure on the walls of a container?

  By colliding with the walls, creating a force.
• How does the behavior of gas particles change with temperature?

  Gas particles move faster at higher temperatures, increasing pressure.
• What is the relationship between gas pressure and the volume of a container?

  In a non-expandable container, increasing gas pressure decreases volume.
• What is a fantastic fact about racing car tyres?

  They reach 100°C before a race.
• What happens to the rubber of a balloon as the temperature increases?

  The rubber stretches until it cannot stretch further.
• What is the effect of adding more air particles to a balloon?

  It increases the volume of the balloon.
• How does the pressure inside a balloon change with temperature and particle number?

  Higher temperature and more particles both increase pressure inside the balloon.