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A dry cell in which the electrolyte contains KOH.

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Dumas Method

A method used to determine the molecular weights of volatile liquids.

Henry's Law

The pressure of the gas above a solution is proportional to the concentration of the gas in the solution.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.

 

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Coulomb

Unit of electrical charge.

Flotation

Method by which hydrophobic (water-repelling) particles of an ore are separated from hydrophilic (water-attracting) particles of a metallurgical pretreatment process.

Chain Reaction

A reaction that, once initiated, sustains itself and expands. This is a reaction in which reactive species, such as radicals, are produced in more than one step. These reactive species, radicals, propagate the chain reaction.

 

Activation Energy

Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.