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The pressure required to liquefy a gas (vapor) at its critical temperature.

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Chemistry is a familiar school subject

Everyone liked to observe the reaction of reagents. But few know interesting facts about chemistry, which we will discuss in this article.

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.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Indicators

For acid-base titrations, organic compounds that exhibit different colors in solutions of different acidities, used to determine the point at which reaction between two solutes is complete.

Dipole-dipole Interactions

Attractive interactions between polar molecules, that is, between molecules with permanent dipoles.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Half-Life

The time required for half of a reactant to be converted into product(s). The time required for half of a given sample to undergo radioactive decay.

Dissociation

In aqueous solution, the process in which a solid ionic compound separates into its ions.