Name: osmium - Greek 'osme' (fragrance) Atomic number: 76 Chemical symbol: Ox Osmium - one of the heaviest elements Osmium is a silvery, shiny metal, one of the heaviest metallic elements with a density of 22.6 g / cm³. It has the peculiar characteristic that it gives off an irritating, pervasive odor that can give you a strong headache.
Category: Periodic table
Name: phosphorus - from the Greek 'phosphoros' (light emitter) Atomic number: 15 Chemical symbol: P Phosphorus is a non-metallic substance, which does not occur in its pure form in nature, but only as different phosphates. Calcium phosphate, for example, is an important component of our bones, and phosphorus is essential for life because it is an ingredient of DNA, RNA, ATP and cell membranes.
The Periodic System The atoms of elements are tiny, but contain enormous powers and have fantastic properties. Some elements are light, others heavy. Some are radioactive, others extremely flammable. Some respond easily with others - and others prefer to stay themselves.
Enriched uranium supplies millions of people with electricity. But it also changed Chernobyl in the Soviet Union into a smoking, radioactive mess. And anyone who wants to show his power to the world must have enriched uranium. Now Iran wants to enrich its uranium a little more, but that is against the treaty that the country concluded in 2015 with the US, Germany, Great Britain, France, Russia and China.
What is hydrogen? Hydrogen is a colorless and odorless combustible gas. Hydrogen is the most common element: hydrogen atoms are estimated to make up around 88 percent of the universe's atoms. Hydrogen has atomic number 1 in the periodic table. The chemical symbol of hydrogen is H. © Shutterstock Hydrogen is a simple element with no characteristic properties, but can form very remarkable chemical compounds in combination with other elements.
Name: mercury - Middle Dutch quicksilver (living silver) Atomic number: 80 Chemical symbol: Hg Element number 80 in the periodic table is mercury, the only metal that is liquid at room temperature. Mercury is toxic in almost all chemical compounds in which it occurs. Nevertheless, it has been used as a medicine against all sorts of disorders, from skin diseases to venereal diseases - in particular syphilis - but the treatment was often as painful as the disease.
Name: iron - from Old Dutch "isen" Atomic number: 26 Chemical symbol: Fe 6.2% of the surface of the earth is iron, making it the fourth most common element on earth (after oxygen, silicon and aluminum) . In addition, scientists assume that iron is the main component of the Earth's core.
Name: Sulfur - to sulvere in Sanskrit or sulfurium in Latin Atomic number: 16 Chemical symbol: S Sulfur is a yellow substance that has been known since ancient times and therefore has a name in many languages in the world. Sulfur is the 16th element in the periodic table and a kind of chameleon: sulfur has more than 30 appearances.
Name: Helium, after the Greek Helios (sun) Atomic number: 2 Chemical symbol: The Helium is the second lightest element in the universe and after hydrogen the most common. Helium is a colorless, odorless noble gas that was discovered on the sun rather than on the earth - a rarity. Helium has probably played a role in the development of modern aviation.
In the entire universe, heavier elements than hydrogen and helium are extremely rare. The universe consists of about three-fourths of hydrogen and a fourth of helium; all other elements together make up less than 1% of the universe. That is because the universe at the big bang came about with the current supply of hydrogen and helium.
Name: state (from Greek 'astatos' (unstable) Atomic number: 85 Chemical symbol: At Astate is almost a ghost element. It is very rare: scientists have calculated that there is never more than 30 grams of it in the earth's crust. Astate is extremely radioactive , and so unstable that researchers have never succeeded in making enough to see with the naked eye.
Natural uranium consists almost exclusively of two isotopes: 99.3 percent uranium-238 and 0.7 percent uranium-235. Only the latter type can be split and can start a chain reaction in a nuclear reactor. The uranium can therefore only be used if the uranium-235 content has been increased, or if the uranium has been enriched.
Name: gold - related to 'yellow' Atomic number: 79 Chemical symbol: Au Gold is a very soft metal in its pure form that is easy to form. From one gram of gold you can make a thin layer of gold foil of one square meter. Gold has been known since ancient times and has always been used for jewelery because it never loses its luster, and for coins and gold bars as value material.
What are elements? Elements consist of atoms with the same number of protons in the nucleus. Atoms are also formed by neutrons and electrons. The number of protons and neutrons determines the mass of the atom. The elements are numbered by the number of protons in their nucleus, or the atomic number, that is used in the periodic table.
Name: Chlorine - after the Greek word 'chloros' (yellow-green) Atomic number: 17 Chemical symbol: Cl Chlorine is a yellow-green, strong-smelling gas. It is toxic to living organisms and was used as a poison gas in the First World War. Chlorine is very reactive, which means that it is very easy to form compounds with other substances.
Thallium is a sneaky element that invades the body by pretending it is an innocent mineral. If you do not discover the poisoning in time and you are given antidote, you will be put to death. Thallium disguises itself as a mineral The element thallium is a gray and very soft metal.
Name: carbon Atomic number: 6 Chemical symbol: C It is hard to imagine an element that has more diverse shapes than carbon. Graphite and diamonds, for example, consist of pure carbon. The German city of Nördlingen is built of stones that contain millions of diamonds. These were formed 15 million years ago at a meteorite impact.
An international research team from the University of Lund in Sweden has created a new element - number 115 - by colliding two other elements in a giant particle accelerator in Germany. They thereby add an element to the periodic table, the large scientific overview of all elements in the universe.
Name: neon - after the Greek word 'neos' (new) Atomic number: 10 Chemical symbol: Ne Neon is the 10th element in the periodic table and is a so-called noble gas that hardly reacts with other substances. Neon is very stable and has no function for biological organisms. Neon is a color, odor and tasteless gas that was discovered in 1898.
Antimony - Greek "anti monos" (not only) Atomic number: 51 Chemical symbol: Sb (from Latin "stibium") Antimony is a metalloid that comes in two forms: a hard, silvery metal or a gray powder. Antimony has a number of special features. For example, it expands when it is cooled.
Name: oxygen (loan translation of French "oxygène") Atomic number: 8 Chemical symbol: O Oxygen plays an important role for all forms of life on earth: all organisms that breathe cannot do without oxygen, and it is a component of DNA and almost all important biochemical compounds.