![]() ![]() ![]() ![]() Looking at carbon, for example, its symbol (C) and name appear, as well as its atomic number of six (in the upper left-hand corner) and its atomic mass of 12.11. In addition to providing the atomic number for each element, the periodic table also displays the element’s atomic mass. the chemical reactions of a single substance (for example, decomposition) the chemical reaction of a substance reacting with another substance (see examples. Reactivity is a chemical property of a substance 1-4. Most periodic tables provide additional d ata (such as atomic mass) i n a box that contains each element’s symbol. A modern version is shown in Figure 4.6.1 4.6. In the periodic table, shown in Figure 1, the elements are organized and displayed according to their atomic number and are arranged in a series of rows and columns based on shared chemical and physical properties. The reaction is accompanied by a release of energy, allowing the products to reach a stable state. The periodic table is one of the cornerstones of chemistry because it organizes all of the known elements on the basis of their chemical properties. Elements also have specific chemical reactivity, the ability to combine and to chemically bond with each other. The properties of elements are responsible for their physical state at room temperature: they may be gases, solids, or liquids. Devised by Russian chemist Dmitri Mendeleev (1834–1907) in 1869, the table groups elements that, although unique, share certain chemical properties with other elements. The different elements are organized and displayed in the periodic table. Understand the periodic table of elements and how to use it to understand elements. ![]()
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