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The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.

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Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Bubbles

Have you ever noticed that soap bubbles go up in winter and fall down in summer? The reason is that warm air is lighter than cold. And in winter the difference between the air temperature in the room (especially near the windows) and the one you exhale into the bubble is enough to overcome the heaviness of its shell.

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

Freezing Point Depression

The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point

Radiation

High energy particles or rays emitted during the nuclear decay processes.

Optical Activity

The rotation of plane polarized light by one of a pair of optical isomers.

 

Aufbau ('building up') Principle

Describes the order in which electrons fill orbitals in atoms.

Overlap

The interaction of orbitals on different atoms in the same region of space.

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.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.