This chemistry video tutorial provides a basic introduction to pressure. Pressure is defined as force per unit area. 1 Pascal equals 1 Newton of Force per square meter of area. This tutorial gives you an example of calculating the pressure exerted by a book on the table using the weight force of the book and its cross sectional area. This lecture also discusses the inverse relationship between elevation and atmospheric pressure. As the elevation increases, the atmospheric pressure decreases and the boiling point of water decreases. It's easier to boil water on a mountain since the air pressure is so low but it's harder to boil in a valley that is below sea level. This video also considers the gases that make up the atmosphere. Heavy gases tend to sink down and lighter gases rise. In addition, hot air rises and cold air descends.

Pressure & Boiling Point:
   • Introduction to Pressure  Force & Ar...  

Gas Pressure Unit Conversion:
   • Gas Pressure Unit Conversions  torr ...  

Manometers & Barometers:
   • Manometer Pressure Problems, Introduc...  

Water Height & Mercury Column:
   • Height of Water in a Barometer Given ...  

Boyle's Law Practice Problems:
   • Boyle's Law Practice Problems  

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How Does a Bike Pump Work?
   • How Does a Bike Pump Work?  

Charles Law:
   • Charles' Law  

Gay Lussac's Law:
   • Gay Lussac's Law Practice Problems  

Avogadro's Law:
   • Avogadro's law Practice Problems  

Ideal Gas Law Problems:
   • Ideal Gas Law Practice Problems  

Combined Gas Law Problems:
   • Combined Gas Law Problems  

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Gas Stoichiometry Problems:
   • Gas Stoichiometry Problems  

Molar Mass of a Gas at STP:
   • Molar Mass of a Gas at STP  Equation...  

Gas Density at STP:
   • Gas Density and Molar Mass Problems a...  

Dalton's Law of Partial Pressure:
   • Dalton's Law of Partial Pressure Prob...  

Collecting Gas Over Water:
   • Collecting Gas Over Water Practice Pr...  

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Gas Density of Mixtures:
   • Gas Density & Average Molar Mass of a...  

Average Kinetic Energy of a Gas:
   • Average Kinetic Energy of a Gas and R...  

Graham's Law of Effusion:
   • Graham's Law of Effusion  

Kinetic Molecular Theory of Gases:
   • Kinetic Molecular Theory of Gases  P...  

Gas Law Problems Review:
   • Gas Law Problems Combined & Ideal  D...  

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