What is the chemistry chart called?

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The chemistry chart that lists all the elements is called the periodic table, or more fully the periodic table of the elements (also the periodic table of chemical elements, the periodic chart, or the table of elements). It shows the 118 known elements in rows (periods) and columns (groups) by atomic number, with each tile giving the element's symbol, name, atomic number and atomic mass. It is sometimes called Mendeleev's table after Dmitri Mendeleev, who published the first accepted version in 1869, and the official reference version is maintained by the International Union of Pure and Applied Chemistry (IUPAC). Other charts used in chemistry have different names: a solubility chart lists which compounds dissolve, an electronegativity chart compares elements' attraction for electrons, and a reactivity series ranks metals. If someone asks for the chemistry chart in class, they almost always mean the periodic table, which is often shown on classroom walls and on exam data sheets. There are other names in different countries and contexts. In German it is the Periodensystem, in Spanish the tabla periódica and in French the tableau périodique, and in English it is also written as the periodic table of the elements or the periodic system. Students may also hear 'the chemical elements chart', 'the table of the elements' or just 'the table', and a printed copy is often a wall chart or data sheet. Other well-known charts in chemistry include the activity series, the pH scale, the solubility rules table and electronegativity charts, but only the periodic table lists every element by atomic number. Many chemistry exams, such as AP Chemistry, A-level and GCSE papers, provide a periodic table in the paper or data booklet, which is one reason teachers ask students to be comfortable reading it rather than memorizing it. Learn this name first, because every chart, quiz and textbook that lists the elements by atomic number is a periodic table.