Basics
What is a gas?
A state of matter with no fixed shape or volume
What does P stand for?
Pressure
If pressure goes up, what happens to volume (if temperature stays the same)?
Volume goes down
This scientist discovered the relationship between pressure and volume in 1662.
Who is Robert Boyle?
This type of gas assumes no intermolecular forces and no volume.
What is an ideal gas?
What does the Ideal Gas Law help us understand?
How gases behave under different conditions
What does T stand for?
Temperature
What happens to pressure if temperature goes up and volume stays the same?
Pressure Increases
In 1787, he found the direct relationship between volume and temperature.
Who is Jacques Charles?
Real or ideal: Gas particles in this type actually take up space and attract each other.
What is a real gas?
What is the formula for the Ideal Gas Law?
PV=nRT
What is n in the formula?
Number of moles
What kind of relationship do pressure and volume have?
Inverse
He identified the direct link between pressure and temperature in 1809.
Who is Joseph Gay-Lussac?
Ideal gases work best under these two conditions
What are low pressure and high temperature?
What kind of gas does not exist in real life but is used in science?
Ideal gas
If the temperature is in Celsius, what must you do before using it in the Ideal Gas Law?
Convert it to Kelvin by adding 273
What kind of relationship do temperature and pressure have?
Direct
In 1811, this scientist proposed that equal volumes of gases at the same conditions contain the same number of particles.
Who is Amedeo Avogadro?
This equation, written as PV = nRT, describes the behavior of an ideal gas.
What is the Ideal Gas Law?
Why is the Ideal Gas Law useful in science?
It helps predict gas behavior in different conditions
Which variable in the formula is affected when the amount of gas increases?
n (moles)
If temperature is cut in half and nothing else changes, what happens to pressure?
It’s also cut in half
All their laws were eventually combined into this famous equation: PV = nRT.
What is the Ideal Gas Law?
This scientist’s law about equal gas volumes is more accurate for real gases than assuming they are perfectly ideal. (Hint: one of the people who have their own law)
Who is Amedeo Avogadro?