The document discusses the gas laws of Boyle's law, Charles' law, and Gay-Lussac's law. Boyle's law states that the pressure and volume of a gas are inversely proportional at constant temperature. Charles' law describes the direct proportionality of volume and temperature at constant pressure. Gay-Lussac's law found the direct relationship between pressure and temperature when volume is kept constant. The document also defines ideal gases as having no particle volume or intermolecular forces, while real gases do have particle volume and intermolecular attractive forces.

1. Gas Laws

2. First, Definitions Directly proportional both variables will either increase or decrease together Inversely proportional one variable will increase and the other variable will decrease Do you have these definitions on your unit plan?

3. Temperature held constant? What happens if the temperature is held constant? As the volume decreases, what happens to the pressure? It increases Directly or Inversely Proportional? Inversely

4. Pressure held constant? What happens when the pressure is held constant? As the volume decreases, what happens to the temperature? It decreases Directly or Inversely Proportional? Directly

5. Volume held constant? What happens when the volume is held constant? As the temperature increases, what happens to the pressure? It increases Directly or Inversely Proportional? Directly

6. Boyle’s Law Robert Boyle Studied relationship between pressure and volume when temperature was constant Determined they were inversely proportional

7. Charles’ Law Jacques Charles Studied relationship between volume and temperature when pressure is held constant Determined they were directly proportional

8. Gay-Lussac’s Law Joseph Gay-Lussac Studied relationship between pressure and temperature when volume is held constant Determined they were directly proportional

9. Ideal vs. Real Gas Ideal gases are gases whose particles take up no space and have no intermolecular attractive forces Can you give an example of an ideal gas? Probably not….they do not exist in the real world! Expressed by the question PV = nRT Do you have these definitions on your unit plan?

10. Ideal vs. Real Gas Real gases are gases whose particles take up space and have intermolecular attractive forces Do you have these definitions on your unit plan?