Pressure A. _______ (P) is defined as the _____ per unit ____ on a surface. It is defined by the following formula: Pressure = Force Area Pressure force area

Pressure 1. The pressure of a gas is the ______ that the gas exerts on the _____ of its container. force walls

Pressure Barometers 2. ___________ are used to measure atmospheric pressure

Pressure B. There are many ______for pressure including, atmosphere(atm), Millimeters of Mercury (mmHg), Kilopascals, and more!. Units

Relationships between Different Units of Pressure (at 0°C) 1atm = 760mmHg = 101.325kPa

KINETIC ENERGY Temperature A. ___________ is a measure of the average _______ _______ of the particles in a sample of matter. Temperature KINETIC ENERGY

Temperature 1. Particle diagrams with __________ can be used to illustrate different kinetic energies at different temperatures. vectors

Temperature Variation of Velocity 2. A__________________ distribution describes particle speeds

Temperature

Temperature CELSIUS B. The _________ (°C) scale is the temperature scale in which water freezes at ___ degrees Celsius and boils at ___ degrees Celsius. 100

KELVIN absolute freezes boils Temperature KELVIN C. The _________ (K) scale is the _________ temperature scale used in the scientific community (There are no negative values on the Kelvin scale). Water _______ at 273K and ______ at 373 K. absolute freezes boils

Temperature ABSOLUTE ZERO 1. __________ _____ is the theoretical lowest temperature possible at which all molecular motion stops.

Temperature convert 2. To _______ between Celsius and Kelvin use the formula: K= °C + 273

standard temperature and pressure STP A. For purposes of comparison, scientists have agreed on standard conditions of exactly 1 atm pressure and 0 °C for temperature. These conditions are called __________ _____________ ____ _________ and are commonly abbreviated STP. standard temperature and pressure