The lightest element is hydrogen, H2, which is also the most common. Hydrogen is very reactive and forms water when it interacts with oxygen.Know More
Hydrogen has the following properties:
Hydrogen is a colorless and odorless gas with the lowest density of all the gases. There is evidence suggesting that hydrogen could become a clean fuel source, and it is used to power some buses and cars. In the chemical industry it is used to produce ammonia as a fertilizer, and it removes sulfur during oil production. In addition, it hydrogenates oils to produce fats like margarine.
Other common uses for hydrogen include filling balloons and airships, as well as forming a protective environment during glass sheet manufacturing. As hydrogen reacts with oxygen to produce water, it can become problematic when used in airships and balloons.
In the human body hydrogen exists to form hydrogen bonds. However, it is not chemically active in other ways. As well as being common on Earth, hydrogen is found elsewhere in the solar system. For example, Jupiter is primarily made from hydrogen.Learn more about Atoms & Molecules
The most abundant element in the universe is hydrogen. Approximately 75 percent of all matter is composed of hydrogen. As of 2015, 90 percent of the visible universe is comprised of hydrogen.Full Answer >
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 element is so reactive that it can even react with itself.Full Answer >
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 atmosphere and crust.Full Answer >
Pure hydrogen gas, H2, is almost purely water insoluble, and like all other gases, its solubility decreases as the temperature of the water increases. At zero degrees Celsius, the solubility of hydrogen is 0.0019 grams per kilogram of water, which drops to below 0.0012 g/kg at 60 degrees.Full Answer >