Iodine (I) is an essential element in biology, industry, science and health. It's known for its intense violet gas and strong odor....

Scheele's Green is a rich, vibrant green. Its color appeal surpasses that of the copper carbonate paints of the late 18th century and...

Carl Wilhelm Scheele (1742 - 1786) is a self-taught German-Swedish chemist whose work has strong impact on chemical sciences of the day....

Copper (II) sulfate CuSO4 yields a vivid color and widespread applications. Also known as blue vitriol in alchemy and chalcanthite in...

Iron(III) oxide or ferric oxide (Fe2O3) yields a striking red color as a pigment, and has a wide range of uses. From industrial...

Bacteria affect food, water, soil, human health and the vibrant colors of art. Here are six remarkable bacteria known for stunning...

Metal salts are compounds created from metals and acids. In history and today they enjoy uses in beauty, natural health, chemical...

Silverpoint is a drawing medium with distinct artistic potential. This delicate and precise medium has a rich history, unique properties,...

Drawing is a creative expression for humans since cave paintings of prehistory. In art, anything making a mark is a drawing tool....

Sanguine is a rich, reddish-brown chalk beloved by Renaissance artists such as Michelangelo. Creating flesh-like tones in the human form...

Mosaic gold is also known to alchemists as aurum musivum or aurum mosaicum due to its mottled formation. Forgotten in the data fields...

Alchemy these days is often seen only as a mystical practice purveying the clic hé of turning base metals into gold. Alchemy is in fact...

Alchemy seeks the magnum opus or great work. This twelve step program comes from the anonymous Ripley Scroll, so called as alchemist...

Prussic acid, widely known as hydrogen cyanide (HCN), has a rich history and unique properties as one of the most notorious compounds of...

Chemistry from 1600 to 1800 yields transformative discoveries influential today. In the German lands this era is characterized by...

Iron III acetate, or ferric acetate, is a non-toxic compound in numerous scientific and industrial applications. Ferric acetate is a...

White lead, lead(II) carbonate or PbCO₃, has a long sordid history in art, paint and industry, a major source of white for artists and in...

Toxic heavy metals cadmium, mercury, lead, chromium, and arsenic are elements known for high density and toxicity even in small amounts....

Arsenic trioxide is a toxic compound with a a long and complex history, known at least by the time of the ancient Romans. Here's a look...

Microbiology explores the world of microbes or micro-organisms. It reveals a hidden dimension of unseen forces shaping health,...