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Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

Latest Articles

  • Protein Design: Automated protein discovery and synthesis

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

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

  • Diamonds Are Forever

    Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?

  • Ozone

    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.

  • 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.



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Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Hydrogenation

The reaction in which hydrogen adds across a double or triple bond.

Cloud Chamber

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

Calorimeter

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

Moderator

A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.

Autoionization

An ionization reaction between identical molecules.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Inhibitory Catalyst

An inhibitor, a catalyst that decreases the rate of reaction.

Equation of State

An equation that describes the behavior of matter in a given state, the van der Waals equation describes the behavior of the gaseous state.