Chemical Reaction Essay

Noble gases are the most stable elements of the periodic table. They have many qualities that make them unique to other elemental groups. Noble Gases have many important differences that should be noted when studying the periodic table; such as the number of valence electrons and location, their state of matter, and their reactivity.

O and S belong to the same group. How many valence electrons does each have?

chemical element here on our own planet Earth. Though it is a rare, unreactive noble gas,

Nonmetallic properties tend to predominate for elements at the far right portion of the table.

The periodic table is a table that categorises and displays all of the chemical elements. It is made up of groups, periods and blocks. A group (also referred to as a family) are the columns of elements, there are 8 groups. The elements in each family have similar but not identical properties and they all have the same number of outer electrons. E.g. lithium (Li), sodium (Na), potassium (K) are all soft, white, shiny metals because they are all members of group 1. A period is each horizontal row of elements, there are 7 periods. In a period, the elements are not alike in properties, the first element in a period is always an extremely active solid, and the last element in a period is always an inactive gas. Properties change greatly across a given row. Each new period represents the next shell which electrons fill. A block is a region of the periodic, there are 4 blocks: S, D, P and F.

The objective of this experiment is to experimentally investigate which elements show similar chemical properties.

The three elements that I will be looking at are Krypton, Arsenic, and Potassium. These elements are all very different but share some similarities even with their separate placement on the periodic table. I chose these elements because they are the most different of the six elements that I chose to do this project on. Arsenic is the first element we will be looking at. Arsenic is a metalloid because it shares some characteristics with metals and some with nonmetals.

the elements above and below in the periodic table, sulfur and tellurium” are saying that this

The elements are positioned on the periodic table based on their atomic number. Atomic number, or the number of protons in the nucleus, is what distinguishes each element on the chart. In the original design of the periodic table, elements were organized based on their atomic mass, however it was later discovered that placing the elements based on atomic number made more sense, as it created a pattern and allowed it to be known what elements are yet to be discovered. Generally, however, the atomic mass increases with the atomic number. Hydrogen is probably the most simple example. Hydrogen (H) has only one proton in its nucleus, so it’s atomic number is one. Therefore, it is the very first element on the periodic chart.

The fourth most abundant and by far one of the most interesting elements, Neon, is definitely unique. The tenth element on the periodic table is known as a noble gas, with the symbol ‘Ne’. This element has a density of 0.0008999 g/cubic meter, a boiling point of -246.08 degrees Celsius, three natural isotopes, an atomic mass of 20.179, and a melting point of -248.59 degrees Celsius. It’s atomic number is ten, and its atomic mass is 20.179.

Group 1- hydrogen: lightest element on the periodic table. lithium: lithium never occurs freely in nature. sodium:Sodium is the sixth most abundant element in the Earth's crust,. potassium:Potassium ions are necessary for the function of all living cells. rubidium: Rubidium has also been reported to ignite spontaneously in air. caesium:the element is only mildly toxic, it is a hazardous material as a metal and its radioisotopes present a high health risk if released into the environment. francium:Francium is the most unstable of the naturally occurring elements

There have been many elements that have been discovered in this world. The two latest elements that have been discovered are ununquadium and ununhexium. Ununquadium is element number 114 on the periodic table. It was given the official name of flerovium by the IUPAC in 2012. Ununhexium is element 116 on the periodic table. It was given the official name of livermorium by the IUPAC in 2012. There are two other elements that have been discovered, but not yet confirmed. Those elements are ununtrium and ununpentium. Ununtrium is element 113 on the periodic table and it has no official name yet. Ununpentium is element 115 on the periodic table and also has no official name yet.

First off, what is a periodic table? A periodic table is a table of chemical elements, which are arranged according to their atomic number, as well as other similarities. When you look at a periodic table for the first time, it can be overwhelming to see all of the elements. Once you take a closer look, you notice that they are arranged in certain groups. As stated in the lab website, each of the groups has a number (1-18) associated with it. Each of the elements all contains their names, the number of elections they have, and their atomic mass. For example, a really commonly known element is Hydrogen. Hydrogen contains one election and its atomic mass is 1.008.

Elements exist all around us. There are actually one hundred and fifteen elements. Ninety of these one hundred and fifteen are naturally occurring. Metals make up ninety one of the one hundred fifteen elements. One element that fits all these characteristics; weighing in at thirty five point thirty nine grams, having an atomic number of thirty and grouped into group twelve on the periodic table, is none other than zinc.

The last thing is Nitrogen is the first element of Group V main group elements, a group that is called the nitrogen group. The nitrogen atom has five electrons in its outermost electron shell. Nitrogen is a colorless, odorless gas which is found as a two-atom molecule in nature. The two nitrogen atoms are joined by a triple bond. Each nitrogen atom has one unbounded electron pair. Nitrogen was recognized as one component of air in 1777 by C.W. Scheele. At the time, it was found not to be essential for either combustion processes or organism respiratory functions. It is almost completely insoluble in water. It does