Oxygen is a highly reactive and very abundant element that reacts with many things, including, as the University of California, Davis' ChemWiki points out, the reaction it has with hydrogen, which creates water. This ele... More »

Alkaline earth metals, the elements in the second column of the periodic table, are the most likely elements to lose two electrons in chemical reactions. They include beryllium, magnesium, calcium, strontium, barium and ... More »

Magnesium reacts with water differently depending on the phase of water. Magnesium reacts with steam or water vapor to produce magnesium oxide and hydrogen gas. However, its reaction with cold water produces magnesium hy... More »

A metal hydroxide and hydrogen gas form when a metal reacts with water. The metal hydroxide is a strong base. Reactions between a metal (especially an alkali metal) and water usually produce a violent scene. More »

The most abundant element on Earth is oxygen, but the most abundant element in the entire universe is hydrogen. On Earth, oxygen makes up approximately 47 percent of the Earth's mass and is found both in Earth's atmosphe... More »

When French scientist Antoine Lavoisier discovered that hydrogen was a necessary component in water in 1783, he named the element "hydrogen," derived from the Greek words "hydro" and "genes." Together, these two Greek wo... More »

The covalent bonds between hydrogen and oxygen in a molecule of water are the most polar. Water is a covalent molecule, meaning the two atoms of hydrogen and the one atom of oxygen share electrons. More »