A substance at temperature above its critical temperature.
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Use of diamonds
Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...
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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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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.
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Harmful Chemicals Found In Food
It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...
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Interesting facts about metals
Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.
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Surface Tension
It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.
Eluate
Solvent (or mobile phase) which passes through a chromatographic column and removes the sample components from the stationary phase.
Secondary Voltaic Cells
Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.
Dipole
Refers to the separation of charge between two covalently bonded atoms.
Specific Rate Constant
An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.
yttria
Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.
Atmosphere
A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.
Radical
An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)
Single Bond
Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.
Polydentate
Refers to ligands with more than one donor atom.
