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Adding Fractions with Different Denominators A very difficult area for many people is fractions, especially when you begin adding. This can become even more complex…

Ependyma Definition Ependyma is the membrane lining the ventricles of the brain and the central canal of the spinal cord. It is one of the…

Silicon Definition Silicon is a metalloid element that occurs in both gray crystalline and brown noncrystalline forms. It is the second most abundant element in…

Ventricular System Definition Ventricular system is comprised of a series of four cavities in the brain that produce cerebrospinal fluid (CSF). It is a series…

Fluoroantimonic Acid Definition Fluoroantimonic acid is considered the strongest liquid superacid, and depending on who we talk to, may be considered the strongest superacid. It…

About Brass Definition Brass is a yellowish alloy of copper and zinc, usually 67 percent copper and 33 percent zinc. It sometimes includes small amounts…

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…