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Glossary of Chapter 5 SAT Chemistry Terms

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Normal Atmospheric Pressure
760 Torr
mm Hg to Torr
760 mm Hg = 760 Torr
Atm to Torr
1 atm = 760 Torr
kiloPascal to Atm
101.325 kPa = 1 atm
Pascal to Kilopascal
101,325 Pa = 101.325 kPa
Paramagnetism
Element that has an unpaired electron
Dimagnetism
All electrons are paired in an element
Ozone
O3, allotrophic form of Oxygen. has slight different properties of Oxygen
Catalyst
Speeds up or slows down a reaction. Changes the Activation Energy
Kinetic - Molecular Theory
1) Matter is made up of particles. We ignore the space occupied by gas particles, focus on the volume they're contained in
2) Particles of Matter are in constant motion
3) No loss of energy in particle or wall collision
Diffusion
Random motion of gases(like opening perfume in a room)
Effusion
Passage of gas through a tiny hole into a chamber
Graham's Law
The Rate of Diffusion is Inversely proportional to the square root of its Molecular Mass

(the less molecular mass, the faster the diffusion)
Charle's Law
initial V1/T1 = V2/T2 final

at constant pressure

if volume increases, so does temperature
Boyle's Law
P1V1= P2V2

At constant Temperature, volume is inverse of Pressure

Volume increases, pressure decreases
Dalton's Law of Partial Pressures
In a mixture of gases, the total pressure is the sum of the partial pressures.

Ptotal = P gas 1 + P gas 2 + P gas 3...
Ideal Gas Law
PV = nRT

n = number of moles is constant
PV = k
R = Gas Constant
Combined Gas Law
P1V1/T1 = P2V2/T2
Manometer
U tube containing mercury and measures pressure of gas
Barometer
A straight tube that measures the pressure of gas or of air.
What is standard pressure and standard temperature?
Standard Pressure = 760 mm Hg

Standard Temperature = 273 K

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