Module 5D

• What do ideal gases abide by?

  All gas laws regardless of pressure or temperature
• Why are ideal gases termed "ideal"?

  They do not exist in reality
• Do ideal gases occupy volume?

  No, they occupy no volume
• What type of intermolecular forces do ideal gas particles have?

  They have no intermolecular attraction forces
• Which gases behave ideally?

  Nonpolar gases like oxygen
• How do the particles of ideal gases differ from real gases?

  Ideal gas particles are purely elastic
• Why is the pressure of an ideal gas greater than that of a real gas?

  Because ideal gas particles lack attractive forces
• When are the differences between ideal and real gases most evident?

  At high pressure and low temperature
• What does the Ideal Gas Law describe?

  The relationship among pressure, volume, temperature, and moles
• What is the equation of state for an ideal gas?

  The Ideal Gas Law
• How does the volume of a gas vary with temperature and moles?

  Volume varies directly with moles and temperature
• What happens to the volume of a gas when temperature increases?

  The volume increases
• What happens to the volume of a gas when pressure decreases?

  The volume increases
• What is Standard Temperature and Pressure (STP)?

  • Pressure: 1 atm
  • Temperature: 273 Kelvin (K)
• In what unit must temperature be when using the Ideal Gas equation?

  Kelvin
• What units can pressure be measured in?

  Pascals (Pa) and atmosphere (atm)
• How much volume does 1 mole of gas occupy at STP?

  22.4 L
• What changes the value of the gas constant (R)?

  Different units of pressure and volume