3.3.1 Gas Pressure

• What causes gas pressure in a container?

  Particle collisions
• Order the factors affecting gas pressure from highest impact to lowest impact:

  1️⃣ Temperature

  2️⃣ Number of Particles

  3️⃣ Container Size
• Why does higher kinetic energy of gas particles increase gas pressure?

  More forceful collisions
• More gas particles in a container lead to higher pressure
• Decreasing the kinetic energy of gas particles increases gas pressure.

  False
• Boyle's Law states that for a fixed mass of gas at a constant temperature, pressure and volume are inversely proportional
• Boyle's Law states that at constant temperature, pressure and volume are inversely proportional
• According to Boyle's Law, compressing a gas increases its pressure
• Higher kinetic energy of gas particles results in higher gas pressure
• The smaller the container size, the lower the gas pressure

  False
• The SI unit of pressure is the Pascal
• What is normal atmospheric pressure at sea level in Pascals?

  101,325 Pa
• Gas pressure is the force exerted by the gas per unit area
• Higher kinetic energy of gas particles leads to lower gas pressure.

  False
• Match the factor affecting gas pressure with its impact:

  Number of Particles ↔️ More particles = Higher pressure

  Temperature ↔️ Higher energy = Higher pressure

  Container Size ↔️ Smaller container = Higher pressure
• Gas pressure is the force exerted by the gas per unit area
• A smaller container volume results in lower gas pressure.

  False
• How does a smaller container size affect gas pressure?

  Increases pressure
• Order the factors affecting gas pressure from lowest to highest impact, assuming all other factors are constant:

  1️⃣ Container Size

  2️⃣ Kinetic Energy

  3️⃣ Number of Particles
• What is the mathematical expression for Boyle's Law?

  $PV =$$constant$
• Boyle's Law is mathematically expressed as PV = constant


  True
• What is gas pressure defined as?

  Force per unit area
• What causes gas pressure in a container?

  Particle collisions
• If the pressure of a gas is doubled, its volume will be halved
• Millimeters of mercury (mmHg) is used to measure atmospheric pressure


  True