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- Welcome back, today we're going to learn about the 4 different types of gas laws.
- Does anyone know the 4 gas laws?
- GAS LAW
- Yes, the four gas laws are Avogadro's, Boyles, Charles, and Gay-Lussac law
- Ex: If you decrease the amount of air contained in a balloon, a significant decrease in the volume and in the size of the balloon can be observed. Therefore, it's directly proportional because the pressure and temperature are constant.
- 1. Avogardo's Law: Equal amounts of gases occupy the same volume at constant temperature and pressure. Formula: V1/n1=V2/n2
- Ex: When a soda bottle is filled, it is also pressurized. When you slowly open the cap, the gas is able to increase its volume and the pressure decreases. Therefore, when volume rises, pressure drops and vice versa. 
- 2. Boyle's Law: The volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature. 
- Formula: P1V1=P2V2
- Ex: Do you know why people check their tires so much in the winter? Well, that is because when it gets cold, or when the temperature decreases, the volume of the gas inside the tires decreases. This causes the tire to deflate. This is because when the temperature decreases the volume also decreases. 
- 3. Charles Law: The volume of a fixed amount of gas is directly proportional to its temperature in kelvin at constant pressure.
- Formula: V1/T1=V2/T2
- Ex: When the cooker is heated, the pressure exerted by the steam inside the container increases. Therefore, the high temperature and pressure inside the container cause the food to cook faster.
- 4. Gay-Lussac's Law: The pressure of a gas varies directly with temperature when mass and volume are kept constant  
- Formula: P1/T1=P2/T2
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