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A device for measuring pressure.

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Heat of Crystallization

The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.

Integrated Rate Equation

An equation giving the concentration of a reactant remaining after a specified time, has different mathematical form for different orders of reactants.

Octane Number

A number that indicates how smoothly a gasoline burns.

Cathode Ray Tube

Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Radiation

High energy particles or rays emitted during the nuclear decay processes.

ytterbia

Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.

Designated area

An area that may be used for work with carcinogens, reproductive toxins, or substances that have a high degree of acute toxicity. A designated area may be the entire laboratory, an area of a laboratory, or a device such as a laboratory hood.

Water Equivalent

The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.