Atoms, Molecules and Elements Essay

Atoms, molecules and members be the building blocks of everything we can see, hear, and touch. though not visible to the naked eye, it is the combination of millions of these critical substances that draw us who and what we argon today. Many elements make up the world most us, and each element reacts differently to its surroundings. The definition of reactivity as pertained to chemical science states, The relative capacity of an atom, molecule, or radical to tolerate a chemical reaction with another atom, molecule, or compound (Reactivity, 2014). The reactivity of some elements or gases is great than that of others. When Dmitri Mendeleev created the periodic table he arranged the elements ground on their relative atomic mass. Alkali metals are very reactive when mixed with other elements and are placed in Group 1A of the periodic table. at that place are also extremely reactive metalloid elements called halogens and are known to be in congregation 7A in the periodic tabl e. Both the alkali metals and the halogens (nonmetals) on considered to be main group elements.When the number of outside shell negatrons is closer to virtuoso or seven-spot the higher the elements reactivity. Alkali metals contain a wizard electron in their outer shell which makes them super reactive and halogens contain only seven electrons in their outer shell. Noble gases, such as helium, are not reactive because they are chemically horse barn and will not combine with other elements. HS and HO are molecules make from atoms that share similar properties. While the molecular social structure of these compounds looks similar they are actually very different. When HO is combined a liquid is create whereas HS forms a gas. What is meant by the electronic structure of an atom? This describes how the electrons are organized around the nucleus of an atom. The protons and electrons of an atom both claim an galvanising charge. While a proton has a positive charge, an electron ha s a negative charge and when moving toward each other they will be attracted to each other.When ii protons move toward each other they will snub away, as is true with ii electrons. The more null an electron has, the farther from the nucleus it will be, thus electrons are arranged in shells at dissimilar distances from the nucleus according to how oftentimes energy they have (Science south Advantage, 2011, p. 319). The charge of an atom works much like that of a magnet, if you try to put the two negative ends together they will push apart. designed the electronicstructure of an atom helps chemists to predict the impression of chemical reactions by knowing if the properties will be attracted to each other or repel from one another. With all that scientists know about atoms, molecules, and elements I am sure there is much more to learn. keen how metals, gases, and elements work together can assist in predicting the outcome of experiments.ReferencesReactivity. (2014, July 7). Retrieved from Dictionary.com http//dictionary.reference.comScience Southwestern Advantage. (2011). Nashville Southwestern/Great American Inc.