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A device used to measure the heat transfer between system and surroundings.

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Chemical Bonds

The attractive forces that hold atoms together in elements or compounds.

Structural Isomers

Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

Cyclotron

A device for accelerating charged particles along a spiral path.

Combustible

Classification of liquid substances that will burn on the basis of flash points. A combustible liquid means any liquid having a flash point at or above 37.8°C (100°F) but below 93.3°C (200°F), except any mixture having components with flash points of 93.3°C (200°F) or higher, the total of which makes up 99 percent or more of the total volume of the mixture.

Surface Tension

It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

Polyene

A compound that contains more than one double bond per molecule.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Free Energy, Gibbs Free Energy

The thermodynamic state function of a system that indicates the amount of energy available for the system to do useful work at constant T and P.