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Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

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Spectral Line

Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum, represents the energy difference between two energy levels.

 

Essential Oil

A plant extract that has a distinctive odour or flavour.

Cohesive Forces

All the forces of attraction among particles of a liquid.

Buret

A piece of volumetric glassware, usually graduated in 0.1-mL intervals, that is used to deliver solutions to be used in titrations in a quantitative (dropwise) manner.

Inert s-pair Effect

Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

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.

Solvolysis

The reaction of a substance with the solvent in which it is dissolved.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.