O L A 8th  Ch2  Gases
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  • What is the def of temperature?? So, the higher the temp, the faster the particles/ BASED ON A GAS WHO CANNOT CHANGE VOLUME

Transcript

  • 1. Chapter 2
  • 2. Warm-Up
    • On the next left page, reflect on the following:
      • Glass is an amorphous solid. How can you use that information to help explain why a glassblower can bend and shape a piece of glass that has been heated?
  • 3. Today’s Topic & Question
    • Topic: Behavior of Gases
    • How are volume, temperature, and pressure of a gas related?
  • 4. Measuring Gases
    • Gases are able to easily compress
    • In a helium tank, the amount of helium you get actually depends on the temperature and air pressure that day!
  • 5. Volume
    • Amount of space matter fills
    • Volume of a gas = volume of the container
  • 6. Temperature
    • Measure of the average energy of motion of the particles in a substance
    • Fast particles = greater energy = higher temp.
  • 7. Pressure
    • Force of its outward push on the walls of the container
    • Measured in kilopascals (kPa)
    • Force divided by area
  • 8. Question for You
    • What are 3 properties of a gas you can measure?
  • 9. Relating Pressure & Volume
    • Boyle’s Law
      • When the pressure of a gas increases, its volume decreases. When the pressure of a gas decreases, its volume increases.
  • 10. Relating Pressure & Temperature
    • When the temperature of a gas increases, its pressure increases.
    • When the temperature of a gas decreases, its pressure decreases.
    • Page 53 Figure 13
  • 11. Relating Volume and Temperature
    • Charles’s Law
      • When the temperature of a gas increases, the volume increases.
      • When the temperature of a gas decreases, the volume decreases.
  • 12.