One of the great accomplishments of science has been the organizing of the elements into a form that allows us to use chemistry in amazing ways. In 1789 Antoine Lavoisier published a list of 33 elements grouping them into gases, metals, nonmetals, and earths. For the next 100 years, chemists searched for a better classification system. As the understanding of the design of atoms improved, scientists developed the periodic table of elements.
In 1869 Dmitri Mendeleev published the first table designed to show periodic changes in the properties of the elements. He was even able to predict the discovery of elements unknown at the time that would fill out his chart. As scientists further refined the periodic table of elements, it became even more useful. The horizontal rows are called periods, with metals on the left and nonmetals on the right. As you move from left to right in a period, the elements become less metallic. As you move from top to bottom, the columns, called groups, have similar properties. All of the elements in the last group on the right side of the chart are called noble gases, and they are chemically inactive. The next vertical column to the left of noble gases is called the halogens. They have similar chemical properties, such as the ability to support combustion.
We now know that the reason the periodic table of elements works is because of the electron configurations of the atoms. Chlorine, for example, has an electron configuration that leaves it one electron short of a stable chemical structure. It will exert tremendous force to get a single electron to make its electron configuration stable. Sodium has an extra electron that it would really like to get rid of to gain stability. Those two elements react so that sodium transfers its electron to chlorine and the compound that results is salt – NaCl. Every element in the vertical group with sodium will also react with chlorine in the same way, making lithium chloride, potassium chloride, rubidium chloride, etc.
We now have 118 confirmed elements in existence with 94 occurring naturally. Scientists have produced the remaining 24 elements in laboratories with nihonium, moscovium, tennessine, and oganesson being the most recent. It is difficult to think about atoms and understand how their electrons control their uses and not be impressed by the mind that created this incredibly complex system.
This is a very brief over simplification explanation of the periodic table of elements. It just begins to suggest how the electrons are organized into shells and subshells. The system allows different methods of bonding elements together, creating a diverse population of new compounds that make our lives not only comfortable but possible. For a better understanding, enroll in a basic chemistry class at your local community college or university. “The LORD has done this, and it is marvelous in our eyes” (Psalm 118:23 NIV).
— John N. Clayton © 2019

This past
Herman Streitburger is a Vermont resident who was held captive in a German prisoner of war camp during World War II. He donated a Bible to the Manchester VA Medical Center for use on a POW/MIA remembrance table. An atheist group filed a lawsuit demanding the removal of the Bible from the memorial saying the Bible’s presence was unconstitutional and “an outrage.” Are all Christian symbols unconstitutional?
When you open your eyes in the morning, take a minute to thank God that you can see. We should reflect upon how good it is to have light instead of the darkness of night. The properties of light make it unique and special.
We have received some questions from readers who are perplexed by the fact that we frequently refer to a discovery or an event in outer space, millions of light-years from Earth. We have also mentioned NASA’s daily blog (apod.nasa.gov) showing gorgeous views of deep space objects many light-years away. Why such a large universe, and what does that mean to us?
I would like to be a mother. I can’t imagine the joy of motherhood bringing a new life into the world, nurturing that child and watching her or him grow into a productive adult. I want to be a mother very badly, but I don’t have the equipment to do that.
Tomorrow is “Mother’s Day,” and we have some thoughts on women and motherhood.
Yesterday, we talked about the Teays River and how, like other rivers, it brought water into dry areas. (To read yesterday’s post, click
Those of us who live near rivers are both blessed and cursed. My house here in Michigan is located just 30 feet (9.1 m) from the St. Joseph River. In the almost 25 years that we have lived here, the
Every part of the United States has rocks, plants, and animals that are unique to that area. Certain plants grow in abundance in various locations. In Arizona the saguaro cactus is abundant. California is home for giant redwood trees. Indiana has tulip trees. Many states have adopted an official flower, tree, bird, fossil, or rock. In Michigan, since 1965 our state rock has been the Petoskey stone.