GAS LAWS
Charles's Law
In this law the pressure stays constant, or the same. Temperature and Volume are directly related; meaning that the temperature and volume either both go up or both go down.
Classroom Example: A classroom example of this law is when we placed balloons into a container of liquid nitrogen. Liquid nitrogen lets off a very cold vapor and when the balloon is set into the liquid nitrogen it causes the balloon to lose its volume. When you take the balloon out of the liquid nitrogen and place it back into room temperature it starts to gain its volume back. This shows Charles's law because the pressure of the balloon stayed constant, and the temperature of the space the balloon was placed in and the volume of the balloon decreased due to the liquid nitrogen. Then when the balloon is taken out of the liquid nitrogen, with the temperature going back up to its original starting temperature, the balloon starts to gain its full volume back. This is also showing Charles's law with temperature and volume both increasing also.
Real Life Example: A real life example of Charles's law is leaving a basketball out in the cold weather. When a basketball if left in a cold garage or outside during the cold months, it loses its air inside (or volume). This is showing, with constant pressure, if the temperature drops, the volume decreases also. Once you bring the ball back into a warm temperature, it starts to gain its volume back, showing again that with constant pressure the temperature and volume are increasing.
Boyle's Law
In this law the temperature stays constant. Pressure amd volume are inversely related; meaning that if pressure goes up volumes goes down, and if volume goes up then pressure goes down.
Classroom Example: A classroom example of Boyle's Law is when we did the lab called "The Straw Popper." In this lab, you twist ends of a straw together which creates a pocket of air in the middle. Then, with your finger, you flick the air pocket of the straw until it pops. The reason why the straw pops is the example of Boyle's Law. With no change in temperature, by flicking the straw it puts an increase of pressure onto the straw. The increase of pressure, the air in the straw is being decreased and moved around which gives no where else to go but out and causes the straw to pop. So with the increase of pressure which is causing the decrease in volume, it varies inversely with the constant temperature making this an excellent example of Boyle's law.
Real Life Example: A real life example of Boyle's law is a spray can, like spray paint or an air freshener. Inside the can, there is an intense build-up of pressure and a minimal amount of volume in the can. When you press down on the trigger, it opens up a hole at the top, allowing some of that pressure out which creates the colored paint or the smell. With the temperature staying the same throughout, the intense pressure is varied indirectly with the minimal amount of volume allowed in the spray can showing that this is an example of Boyle's law.
Gay-Lusac's Law
In this law the volume stays constant. Temperature and pressure are directly related; both increasing or both decreasing.
Classroom Example: A classroom example of Gay-Lusac's law was the lab called "Crush the Can." You place an empty pop can with a little bit of water in the bottom of it on a hot plate and wait for it to start steaming out the top and the water to boil inside. When the water is boiling, you use tongs and place the can into a bucket of ice cold water and make sure it is placed under water at all times until you see and hear the can crush. This portrays Gay-Lusac's law because with the constant volume of the can, both the pressure and the rapid temperature change is increasing. When the can is pushed down into the ice cold water, it changes the pressure rapidly, pushing water into the can which causes the can to crush. Then when you lift the crushed can out of the water you can watch water come out of it showing that the water was pushed into the can which caused it to crush. The rapid temperature change from very hot to freezing cold helped with the crushing of the can because if the pressure rapidly increases so does the temperature.
Real Life Example: A real life example of Gay-Lucac's law is opening a sealed container of a hot food dish. When the dish has a lid on it is creating and building up pressure inside of it. So when you open a hot dish you can feel that hot flow of air, that is the pressure inside being realeased. The food being hot is an increase of temperature. The volume is staying constant because the lid cannot magically grow to fit with the build up of the pressurized heat being created in the closed off container. With the unchanging volume of the container, the heat of the food dish, and the build up of the pressurized heat inside the container is showing the direct relation between temperature and pressure which is an example of Gay-Lucac's law.
Classroom Example: A classroom example of this law is when we placed balloons into a container of liquid nitrogen. Liquid nitrogen lets off a very cold vapor and when the balloon is set into the liquid nitrogen it causes the balloon to lose its volume. When you take the balloon out of the liquid nitrogen and place it back into room temperature it starts to gain its volume back. This shows Charles's law because the pressure of the balloon stayed constant, and the temperature of the space the balloon was placed in and the volume of the balloon decreased due to the liquid nitrogen. Then when the balloon is taken out of the liquid nitrogen, with the temperature going back up to its original starting temperature, the balloon starts to gain its full volume back. This is also showing Charles's law with temperature and volume both increasing also.
Real Life Example: A real life example of Charles's law is leaving a basketball out in the cold weather. When a basketball if left in a cold garage or outside during the cold months, it loses its air inside (or volume). This is showing, with constant pressure, if the temperature drops, the volume decreases also. Once you bring the ball back into a warm temperature, it starts to gain its volume back, showing again that with constant pressure the temperature and volume are increasing.
Boyle's Law
In this law the temperature stays constant. Pressure amd volume are inversely related; meaning that if pressure goes up volumes goes down, and if volume goes up then pressure goes down.
Classroom Example: A classroom example of Boyle's Law is when we did the lab called "The Straw Popper." In this lab, you twist ends of a straw together which creates a pocket of air in the middle. Then, with your finger, you flick the air pocket of the straw until it pops. The reason why the straw pops is the example of Boyle's Law. With no change in temperature, by flicking the straw it puts an increase of pressure onto the straw. The increase of pressure, the air in the straw is being decreased and moved around which gives no where else to go but out and causes the straw to pop. So with the increase of pressure which is causing the decrease in volume, it varies inversely with the constant temperature making this an excellent example of Boyle's law.
Real Life Example: A real life example of Boyle's law is a spray can, like spray paint or an air freshener. Inside the can, there is an intense build-up of pressure and a minimal amount of volume in the can. When you press down on the trigger, it opens up a hole at the top, allowing some of that pressure out which creates the colored paint or the smell. With the temperature staying the same throughout, the intense pressure is varied indirectly with the minimal amount of volume allowed in the spray can showing that this is an example of Boyle's law.
Gay-Lusac's Law
In this law the volume stays constant. Temperature and pressure are directly related; both increasing or both decreasing.
Classroom Example: A classroom example of Gay-Lusac's law was the lab called "Crush the Can." You place an empty pop can with a little bit of water in the bottom of it on a hot plate and wait for it to start steaming out the top and the water to boil inside. When the water is boiling, you use tongs and place the can into a bucket of ice cold water and make sure it is placed under water at all times until you see and hear the can crush. This portrays Gay-Lusac's law because with the constant volume of the can, both the pressure and the rapid temperature change is increasing. When the can is pushed down into the ice cold water, it changes the pressure rapidly, pushing water into the can which causes the can to crush. Then when you lift the crushed can out of the water you can watch water come out of it showing that the water was pushed into the can which caused it to crush. The rapid temperature change from very hot to freezing cold helped with the crushing of the can because if the pressure rapidly increases so does the temperature.
Real Life Example: A real life example of Gay-Lucac's law is opening a sealed container of a hot food dish. When the dish has a lid on it is creating and building up pressure inside of it. So when you open a hot dish you can feel that hot flow of air, that is the pressure inside being realeased. The food being hot is an increase of temperature. The volume is staying constant because the lid cannot magically grow to fit with the build up of the pressurized heat being created in the closed off container. With the unchanging volume of the container, the heat of the food dish, and the build up of the pressurized heat inside the container is showing the direct relation between temperature and pressure which is an example of Gay-Lucac's law.
