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A neutron ejected at high kinetic energy in a nuclear reaction.

Latest Articles

  • 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.

  • Why do copper products change color, and what is the name of the process?

    Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.

  • 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?

  • The most expensive metal in the world

    Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

  • 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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Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

Net Ionic Equation

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

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Chemistry & Environmental Dictionary - Contains definitions for many chemistry, environmental and other related technical terms and acronyms.
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Exothermic

Describes processes that release heat energy.

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Ligand

A Lewis base in a coordination compound.

Hydrocarbons

Compounds that contain only carbon and hydrogen.