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Addition equations with four digit integers An equation is a mathematical statement that has an expression on the left side of the equals sign (=)…

Cerebrospinal Fluid Definition Cerebrospinal fluid (CSF) is the clear fluid that fills the cavities of the brain and covers the surfaces of the brain and…

Tarnish Definition Tarnish is a substance which forms on the surface of some metals and which stains them or causes them to lose their brightness.…

Fluorosulfuric Acid Definition Fluorosulfuric acid is one of the strongest single-molecule acids, and is formed by the combination of HF and SO3 (Chemical Formula: HSO3F).…

About Itch Definition Itch is a contagious skin infection caused by the itch mite; characterized by persistent itching and skin irritation. It is also known…

Superacid Definition Superacid is an acid with an acidity greater than that of 100% pure sulfuric acid, which has a Hammett acidity function (H0) of…

Thorium Definition Thorium is a silvery-white, radioactive metallic element of the actinide series. The only naturally occurring isotope of thorium, Th 232, is also its…

Hydrogen Fluoride Definition Hydrogen fluoride is a corrosive compound that exists as a colorless, fuming liquid or a highly soluble gas. It is a chemical…

Addition equations with two digit integers An addition equation is a problem that has two or more numbers or integers added together and equaling another…

Titanite Definition Titanite is a very rare calcium titanium silicate that is an important ore of titanium. It is also called Sphene. Its crystals are…

About Lymphoma Definition Lymphoma is a cancer that starts in the white blood cells, or lymphocytes. It is a tumor of the lymphoid tissue. It…

Datolite Definition Datolite is a colourless mineral consisting of a hydrated silicate of calcium and boron in monoclinic crystalline form, occurring in cavities in igneous…