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# 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
• ### O L A 8th Ch2 Gases

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