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1 Chemistry Gas Unit
Chemistry Gas Unit Grade 11 side 1
Question | Answer |
---|---|
Solid (4) | • definite shape and volume • virtually incompressible • does not flow easily • strong attractive forces between molecules |
Liquid (5) | • assumes shape of container • definite volume • virtually incompressible • flows easily • moderate attractive forces between molecules |
Gas(4) | • assumes shape and volume of container • highly compressible • flows easily • weak attractive forces between molecules |
Kinetic Molecular Theory of Gases(5) | 1. Gases made small particles called molecules. 2. Gas molecules very far apart compared with size. Sample of gas mostly empty space. 3. Gas molecules = constant fast motion. Collide with each other and with the walls of the container. 4. Particles col |
Ideal Gas | Hypothetical gas with particles that have mass but no volume or attractive forces between them. (ie. Obey the kinetic molecular theory of gases). |
Gas Pressure | Force gas exerts on walls of container. The more collision with the walls, the higher the pressure. |
Atmospheric Pressure | Pressure exerted by a column of molecules reaching from the top of the atmosphere to the earth. |
Standard Atmospheric Pressure (SAP) | = 760 mmHg = 760 torr= 1 atmosphere (atm)= 101.3 kPa |
Temperature scales | • 0 C = 273 Kelvin (K) |
Absolute zero = 0 K | All kinetic molecular motion stops and a compound has zero kinetic energy |
SATP | Standard Ambient Temperature and Pressure • 25 C and 100 kPa • One mole of an ideal gas at SATP is 24.8L |
STP | Standard Temperature and Pressure for Gases • 0 C and 1 atm • One mole of an ideal gas at STP is 22.4L |