By: Tenebris
Almost uniquely in the natural world, the coldest forms of water ice float on top of warmer forms of water, because ice is less dense than liquid water. Upon this simple natural law, all life on our planet depends.The ratio of an object's mass...
An overview of the chemical element Hydrogen
By: Melanie Grimes
HydrogenHydrogen was the first element created after the big bang. It holds first place in the periodic table with the atomic number of one. Robert Boyle produced hydrogen gas as early as 1671 during an experiment with iron and acids. Though scientists were producing hydrogen...
By: Tenebris
The bizarre spatial anomaly known as a black hole was born in the mind of man as a mathematical concept, an extrapolation of what ought logically to occur in a space where the force of gravity would be such as to overcome all other types...
An overview about the chemical element Gold
By: Melanie Grimes
Gold has an atomic number of 79. Its name is from the Sanskrit word Jval and the Anglo Saxon word for gold. Its chemical symbol, Au, is from the Latin word for gold, aurum, which means yellow. Use of gold dates back as far in...
By: Tenebris
The ideal gas law predicts the state of a gas at a given pressure and temperature. It is expressed mathematically as PV = nRT, where P represents pressure, V represents volume, T represents the absolute temperature in Kelvin degrees, n is the amount of gas...
An overview about the chemical element Gadolinium
By: Melanie Grimes
Gadolinium is a rare earth metal and a member of the lanthanide family. The lanthanides are soft silvery metals, whose name means "hidden". They are very much alike and hard to distinguish from each other. They are members of the rare earth metal group, but...
An overview about the chemical element Europium
By: Melanie Grimes
Europium was discovered just over one hundred years ago, in 1896, when the French chemist, Eugne-Antole Demaray was investigating the newly discovered element of samarium. His samarium samples were contaminated, and on further investigation he found the contamination was an unknown element. He was able...
By: Tenebris
A candle consists of two primary components: a wick, and the solid fuel into which the wick is embedded. The wick must consist of some material which can catch fire quickly and which is also absorbent. In contrast, the fuel must not be able to...
By: Tenebris
Boyle's Law states that at a fixed temperature and within a closed system, the volume of a fixed quantity of a gas is inversely proportional to the pressure it exerts: PV = k, where k is a constant. For example, the volume of air in...
An overview about the chemical element Ytterbium
By: Melanie Grimes
Ytterbium is a member of the lanthanides and one of the earth's rare metals. Its chemical symbol Yb and its atomic number is 70. Ytterbium melts at 1092 K (819C or 1506F) and its boiling point is 1469 K (1196C or 2185F). It is a...

 

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