Sir Humphry Davy discovered calcium in 1808 by isolating the impure metal through the electrolysis of a lime and mercuric oxide mixture. He accomplished this by studying the preparation of calcium amalgam through the ele... More »

Calcium was discovered in 1808 by Sir Humphrey Davy in England. The name is derived from the Latin word, calx or calcis, which means lime. Calcium is an alkaline earth metal and is not found free in nature. This element ... More » Science Chemistry

The element calcium was discovered by Sir Humphry Davy in 1808. The name originates from the Latin word "calx," which means "lime." Calcium is the fifth-most abundant element in Earth's crust, but it is never found freel... More » Science Chemistry Atoms & Molecules

In 1807, English chemist Humphry Davy discovered elemental sodium by isolating it from sodium hydroxide through electrolysis. In nature, sodium is never found in elemental form – only in compounds. More » Science Chemistry Atoms & Molecules

Salt acts as a conductor of electricity in the electrolysis of water. Table salt is called an electrolyte, meaning it can be decomposed into its ions through electrolysis. More » Science Chemistry Organic Chemistry

Sir Humphry Davy discovered potassium in 1807. He exposed very dry molten potash to an electric current, and potassium collected on the end of the cathode. Potassium was the first metal to be isolated in this manner. More » Science Chemistry Atoms & Molecules

Aluminum was discovered in 1825 by Hans Christian Oersted, in Denmark. Oersted was able to isolate the element by heating two chemical compounds, causing the other elements to boil away, resulting in pure aluminum. More » Science Chemistry Organic Chemistry