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# 3 behavior of gases

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### 3 behavior of gases

1. 1. Behavior of Gases
2. 2. Pressure <ul><li>Pressure - the amount of force exerted per unit of area. </li></ul>
3. 3. Formula for Pressure <ul><li>P = F / A </li></ul><ul><li>Pressure = Force / Area </li></ul><ul><li>Atmosphere puts a pressure on everything within it. </li></ul>
4. 4. Pressure vs. Altitude <ul><li>As altitude increases the pressure decrease. </li></ul><ul><li>(As altitude ↑, pressure ↓) </li></ul>
5. 5. Boyle’s Law <ul><li>Boyle’s Law- as volume of a gas decreases, the pressure increases. </li></ul><ul><li>(As volume ↓, pressure ↑) </li></ul><ul><li>Temperature must be the same. </li></ul>
6. 6. Boyle’s Law <ul><li>Balloon in a small box. </li></ul>
7. 7. Charles’s Law <ul><li>Charles’s Law- As volume of a gas increases, the temperature increases. </li></ul>
8. 8. <ul><li>(As volume ↑, </li></ul><ul><li>temperature ↑) </li></ul><ul><li>Pressure must be the same </li></ul><ul><li>(If volume ↓, then temp. ↓) </li></ul>
9. 9. Charles’s Law Ex: <ul><li>Ex: Hot-Air Balloon </li></ul>
10. 10. <ul><li>By using this, Charles’s calculate the temperature which the volume of gas would be zero. </li></ul><ul><li>The temperature is -273 °C or absolute zero. </li></ul>