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A substance whose aqueous solutions conduct electricity.

 

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Isotopes

Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Atomic Radius

Radius of an atom.

Background Radiation

Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

Salt Bridge

A U-shaped tube containing electrolyte, which connects two half-cells of a voltaic cell.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Nickel-cadmium cell (Nicad battery)

A dry cell in which the anode is Cd, the cathode is NiO2, and the electrolyte is basic.