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A device used to measure optical activity.

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Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Resonance

The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Exothermic

Describes processes that release heat energy.

Dosimeter

A small, calibrated electroscope worn by laboratory personnel and designated to detect and measure incident ionizing radiation or chemical exposure.

Cloud Chamber

A device for observing the paths of speeding particiles as vapor molecules condense on them to form foglike tracks.

Gas of rotten eggs

If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

Alkaline Earth Metals

Group IIA metals

Hydrogen Bond

A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.