What Element
A fragment of a chemical component constituting the tiniest quantity able to be associated with another element
Atom
The internal part of an atom. It is composed of neutrons and protons
Nucleus
A chemical element with atomic number 56, symbol Ba. Properties similar to those of lime
Barium
A chemical element, symbol Eu and atomic number 63. Europium is the most reactive of the rare earth elements
Europium
A chemical element with atomic number 27, symbol Co. It has similar physical properties to iron and nickel. Natural cobalt minerals can be used in the form of paints, enamels or varnish
Cobalt
A negatively charged particle that comprises the external part of the atom
Electron
A particle that makes up the nucleus of an atom and has a positive charge identical to that of the electron
Proton
A chemical element with the symbol Be and atomic number 4. The best known gemstones from it are the emerald and the aquamarine
Beryllium
A chemical element, with symbol La and atomic number 57. Lanthanum remained concealed in cerium oxide for a very long time
Lanthanum
A chemical element with atomic number 29, symbol Cu. The simple body copper is a metal
Copper
An ion is an atom or molecule that has gained or lost one or more electrons.
Ion
A chemical element with atomic number 55, symbol Cs, the most alkaline of the alkali metals
Cesium
A chemical element with atomic number 20, symbol Ca. It is the fifth most profuse element in the earth’s crust
Calcium
A chemical element with the symbol Pu and atomic number 94. It is a transuranic radioactive metal of the actinide group
Plutonium
A chemical element with the atomic number 79, symbol Au. The simple body gold is a noble, precious metal whose colour is golden yellow
Gold
A set of at least two atoms, identical or not, chemically attached to each other
Molecule
A chemical element with atomic number 3, symbol Li. It is an alkali metal
Lithium
It is the ninth most abundant element in the universe. As a result from the successive sum of three helium nuclei to one carbon nucleus
Magnesium
A chemical element with atomic number 92, symbol U. It is of the actinide family. It is a very long-life radioactive heavy metal
Uranium
A chemical element with atomic number 26, symbol Fe. The simple body is the most common ferromagnetic metal and material in everyday life, most frequently made of various alloys
Iron
An elementary particle, constitutive of the atomic nucleus. One exception is the normal hydrogen nucleus. It is electrically neutral
Neutron
An altomic element with atomic number 19, symbol K, alkali metal found in potash
Potassium
A chemical element with atomic number 58 and symbol Ce. It is part of the lanthanide and rare earth series
Cerium
A chemical element with atomic number 24, symbol Cr. Its single element is a transition metal
Chromium
A chemical element with atomic number 28, symbol Ni. The simple body nickel is a metal
Nickel