The pressure exerted by one gas in a mixture of gases.
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Calorie
The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.
Downs Cell
Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.
Nickel-cadmium cell (Nicad battery)
A dry cell in which the anode is Cd, the cathode is NiO2, and the electrolyte is basic.
Transition State Theory
Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.
Heat Capacity
The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.
Element
A substance that cannot be decomposed into simpler substances by chemical means.
Activity of a component of ideal mixture
A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.
Frequency
The number of repeating corresponding points on a wave that pass a given observation point per unit time.
Bomb Calorimeter
A device used to measure the heat transfer between system and surroundings at constant volume.
Density
Density is the ratio b/w Mass and Volume: D=M/V
