G10 Q4 CHEMISTRY MOD

• English scientist who made accurate observations on the relationship of pressure and volume of gases: Robert Boyle
• constant when using the Boyle’s Law: Temperature
• SI standard unit of pressure: Pa
• equal to the standard pressure: 1 atm
• When pressure on a gas goes down, what happens to its volume?

  rises
• equation for Boyle’s Law, P1 stands for initial pressure
• equation for Boyle’s Law, V2 stands for: final volume
• What is the equivalent value of 1 atmosphere (1 atm) in Pascal (Pa)?

  101,325 Pa
• Pressure - the force exerted by the gas on the walls of its container divided by the surface area of the container.
• Volume –defined as the space occupied. The volume of the gas is equal to the volume of the vessel or container
• Temperature –defined as the degree of hotness or coldness.
• Which of the following needs to remain constant when using the Boyle’s Law?

  temperature
• In Boyle's law when pressure on a gas goes up, what happens to its volume?

  decreases
• When volume on a gas goes down, what happens to its pressure?

  increases
• What is the definition of ‘k’ in Boyle’s Law?

  PV
• Why is a gas easier to compress than a liquid or a solid?

  The volume of a gas’s particles is small compared to the total volume of the gas
• Statement describes the volume-pressure relationship in gases at constant temperature? As pressure decreases, volume increases.
• Which of the following quantities are inversely proportional in Boyle’s Law?

  volume and pressure
• Air is pumped into a bicycle tire. Which of the following does not happen?The gas density increases.

  b. The gas molecules collide more frequently.

  c. The gas molecules move faster.

  d. The space between the molecules decreases.
• If the volume of a container of gas is lessened, what will happen to the pressure inside the container? The pressure will increase
• If a balloon is pressed, what happens to the pressure of the gas inside the balloon?

  Increases
• Which quantity remains constant in defining Charles’s law?

  Pressure
• Which statement describes the volume-temperature relationship in gases at constant pressure? As temperature increases, volume also increases.
• Which of the following quantities are directly proportional in Charles’ Law?
• . Which of the following needs to remain constant when using the Charles’ Law?

  Mass & pressure
• What happens to a gas at 0 K? The molecules stop moving.
• Which of the following involved the application of Charles’ Law?

  c. soda cans/bottles
• If the volume of a container of gas is reduced, what will happen to the temperature inside the container?

  The temperature will decrease.
• What happens to the volume of a gas when it is compressed?

  The volume decreases.