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The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Latest Articles

  • 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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Ion

An atom or a group of atoms that carries an electric charge.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Hydrogen Bond

A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

Dimer

Molecule formed by combination of two smaller (identical) molecules.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Alloying

Mixing of metal with other substances (usually other metals) to modify its properties.

Insoluble Compound

A very slightly soluble compound.

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Molecular Equation

Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.