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The entropy of a hypothetical pure, perfect, crystalline sustance at absolute zero temperature is zero.

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  • Varieties of garnet minerals

    The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...

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    In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.

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    We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.

  • Creating Malachite egg

    One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...

  • What are Compound Microscopes?

    Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...



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Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.

Electronegativity

A measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another atom.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Homonuclear

Consisting of only one element.

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.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Sublimation

The direct vaporization of a sold by heating without passing through the liquid state.

Dry Cells

Ordinary batteries (voltaic cells) for flashlights. radios, and so on, many are Leclanche cells.

Primary Standard

A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.