What is hydrogen ? What is hydrogen

1.Hydrogen is an element, not a concrete substance.

It can represent the element hydrogen or a hydrogen atom.

3.Hydrogen (element) can make up many substances.

- The combination of hydrogen atoms can form H2, which is not called hydrogen, but should be called hydrogen.

-Combined with oxygen, it can form water (H2O) and can also form H2O2

- Combined with chlorine to form HCl.

Hydrogen is a chemical element with the chemical symbol h and atomic number 1, which is in the first place in the periodic table. Its atom is the smallest of all the atoms. The usual elemental form of hydrogen is hydrogen.

It is a colorless, tasteless, odorless, and extremely flammable gas composed of diatomic molecules, and hydrogen is the lightest gas. It is the most abundant substance in the universe. Hydrogen atoms are present in water, all organic compounds, and living organisms.

It has a particularly strong thermal conductivity and oxidizes synthetic water. At 0 degrees Celsius and one atmosphere, hydrogen weighs only one gram per litre – just one-tenth the weight of the same volume of air.

Hydrogen is an element and also a proton.

Hydrogen is a colorless, odorless, and flammable gas at room temperature, and its density is lighter than air.

Hydrogen is a colorless and odorless gas, if it is simply "hydrogen", then it is a Chinese chemical conformity, or a chemical element.

Room temperature is a flammable, colorless, odorless, and non-toxic gas.

Please, hydrogen is an element.

Hydrogen is a chemical element with the element symbol H, atomic order of 1, and relative atomic mass, and is the first element in the periodic table.

Aside from dark matter and dark energy, hydrogen is the most abundant substance in the universe, with an abundance of more than 70% of chemical elements. There are 5 common states of matter of hydrogen, including gaseous hydrogen, liquid hydrogen, hydrogen slurry, solid hydrogen, and metallic hydrogen.

Hydrogen also has many uses, it can be used to weld or cut metal, make high-energy fuel, and hydrogen can also be used to inflate balloons or airboats. In the food industry, hydrogen can be used to harden animal and vegetable fats and fats to make margarine and brittle cream. In the metallurgical industry, precious metals can be refined using the reducibility of hydrogen.

Hydrogen is also the most desirable non-polluting fuel.

Hydrogen is a chemical element with atomic number 1 and the chemical symbol H, which is first in the periodic table. Its atomic mass is the lightest element and the most abundant element in the universe, accounting for about 75% of the mass of the universe.

The main components of the stars in the main sequence are all plasma hydrogen. On Earth, the free hydrogen element formed by natural conditions is relatively rare.

The most common isotope of hydrogen is 氕 (piē), which contains 1 proton and no neutrons. In ionic compounds, a hydrogen atom can gain one electron to become a hydrogen anion (denoted by h-) to form a hydride, or it can lose an electron to become a hydrogen cation (denoted by h+, referred to as hydrogen ion), but hydrogen ions actually exist in a more complex form.

Purpose

Hydrogen is an important industrial feedstock, such as the production of synthetic ammonia and methanol, and is also used to refine petroleum, and hydrogenated organic matter is used as a shrinkage gas in oxygen-hydrogen flame fusers and rocket fuel. The reduction of metal oxides by hydrogen at high temperatures to produce metals is easier to control than other methods, and the purity of the metal is also high.

It is widely used in the production of tungsten, molybdenum, cobalt, iron and other metal powders, germanium and silicon. Since hydrogen is light, people use it to make hydrogen balloons. When hydrogen is combined with oxygen, a large amount of heat is released, which is used to cut metal.

Hydrogen is a kind of gas element. Symbol h. It is composed of three isotopic elements, deuterium, and tritium, and is the lightest of the known elements. Colorless, odorless, tasteless. It is very active at high temperatures or in the presence of catalytic paracaving agents. It is widely used in the chemical industry.

Compounds: hydrogen, hydrogen bomb, liquid hydrogen.

1. Hydrogen molecule: a molecule composed of two hydrogen atoms in the form of covalent health, the chemical formula is expressed as H2, which is a microscopic particle composed of hydrogen; 2. The hydrogen atom is an atom composed of a proton and an atom with an external electron, which generally cannot exist stably and is prone to chemical inverse residuals; 3. The advantages of hydrogen: large energy, polluting small ridges, and sufficient resources; 4. Disadvantages of hydrogen:

It requires mature conditions, high cost, flammable and explosive, and difficult to store.