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Atoms, Molecules, and Elements Paper

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Atoms, Molecules, and Elements Paper
Carolyn R. Slaughter
October 12, 2014
Jodi Wolf

Atoms, Molecules, and Element Paper
Each column within a periodic table is called a family or group of elements. The Group 1A elements are called alkali metals and they are all reactive metals. The Group 7A elements called halogens are very reactive nonmetals. The Group 8A elements are called noble gases. The noble gases are inert (or unreactive) compared to other elements. Alkali metals and halogens are both reactive. They react spontaneously with water, oxygen and other elements. The elements form a strong base s that is capable of neutralizing strong acid and then reacting. Halogens and alkali have high electro negativities and a large number of valence electrons. These two elements display physical properties which makes them highly reactive when combined together. Noble gases are chemically stable and will not combine with other elements to form compounds (Tro, 2009).
When comparing properties of molecules formed from atoms in similar families such as H2S and H2O, there is a similarity of properties in the elements. Both display similar molecular makeup and properties. First they both have been composed of two hydrogen atoms. H2S is a gas formed from 2 hydrogens, water, and sulfate. H2O remains liquid because of its electronegativity it is 2 hydrogens and oxygen, which is water.
The trends and patterns of the periodic table were organized by Mendeleev. All elements in a table in which relative mass increased from left to right and elements with similar properties were aligned in the same vertical columns. In the modern table elements are listed in order of increasing atomic number rather than increasing relative mass. The elements in the periodic table can be classified as metals, nonmetals, and metalloids. Metals occupy the left side of the periodic table...

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