Joseph Priestley Dephlogisticated Air

Oxygen, O2, is a kind of gas. A lot of the air we breathe as human beings is oxygen. Which is good since we need oxygen to stay alive. Oxygen is also a primary element in fire. Fire is a chemical process. Three elements are needed for this process: oxygen, heat and fuel. Without one of those

Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during combustion.

Growing up in suburban Detroit, David Hahn was fascinated by science. He often conducted experiments in his basement and enjoyed making things such as homemade fireworks, brewing moonshine, and even making his own self-tanning lotion. Hahn especially loved chemistry and spent much of his time doing amateur chemistry experiments. The chemical reactions in these experiments sometimes went wrong and resulted in small explosions. We learned about chemical reactions in class this semester. He loved to read “The Golden Book of Chemistry Experiments” that his father had given him and tried to collect samples of every element in the periodic table, including the radioactive ones. We learned in class about the elements in the periodic table and how they are identified.

Boyle’s studies laid the groundwork of modern chemical analysis of the composition of matter. Among other scientific fields, there were many advances made in chemistry during the Scientific

  Then in 1661, Irish chemist Robert Boyle supported the philosophers’ theory of how chemical elements are made up of the simplest matter, backing the theory of how matter makes up all life and is the smallest living thing (Doc. 1). But a bombshell happened in 1803 when John Dalton backed up all three theories by discovering that atoms make up all matter, and chemical compounds are made of atoms (OI).

led to the discovery of krypton (Stewart). After removing oxygen and nitrogen from the gas with

Thrane Esmark and identified by a Swedish chemist, Jӧns Jacob Berzelius in 1828. Thorium was

The purpose of this lab was to experimentally and scientifically ascertain the percentage of oxygen in Chem B at Woonsocket High School. It was hypothesized that if the percentage of oxygen is measured experimentally in Chem B at Woonsocket High School, then it would be higher than the percentage of oxygen in dry air, which is 20.95%, because the air is not dry due to moisture in the air from people breathing and the altitude of where the experiment takes place may affect it as well.

The book “The Periodic Table” by Primo Levi is undoubtedly a masterpiece. It showcases the enthusiasm, the level of dedication, and passion successful chemists such as Primo Levi himself had for the field of their expertise. The way Primo Levi has related the troublesome times and events he had to face in prospect with the elements of the periodic table is laudable. Primo Levi is surely an inspiration and a perfect example of prodigy and passion. Despite the challenges and the hardships inflicted on him by the bigoted group of Germens, he still managed to emerge as an exceptional chemist and an author who made great contributions to the modern chemistry as we now know it.

Joseph Priestley was born and raised in England before immigrating to Pennsylvania in his later life. Priestley lived in the 18th century and contributed much to the fields of chemistry and biology. Priestley is considered important for many reasons, one of the main reasons being because of his discovery of oxygen. Priestley also discovered Nitrous oxide in 1772. An important discovery in the field of biology, was Priestleys' documentation of photosynthesis.

Filled with shiny, colorful pictures of elements in their many applications, the book was my first in-depth introduction to chemistry. Two pages were dedicated to each element and explained the most common uses. I started to spend time pondering what was in some of the objects around me. I viewed objects more in their elemental sense rather than “plate material” or “cardboard material”. Since then, I’ve only tried to expand my knowledge of the chemical makeup of my world.

The construction of the Periodic Table of Elements was prior to the discovery of the individual elements. Elements such as silver, gold, tin, copper, lead and mercury have been known for centuries. In 1649, the first scientific discovery of an element was made by Hennig Brand when he discovered phosphorous. Prior to Brand’s discovery, chemists had acquired an immense body of understanding concerning the properties of elements and their compounds for the next 200 years.

Although organic reactions have been conducted by man since the discovery of fire, the science of Organic chemistry did not develop until the turn of the eighteenth century, mainly in France at first, then in Germany, later on in England. By far the largest variety of materials that bombard us are made up of organic elements. The beginning of the Ninetieth century was also the dawn of chemistry, all organic substances were understood

To achieve this goal I have organized this paper in the imagination through my perspective of the molecule while using medical terminology. I have put this in two sections, journey of the oxygen molecule, and oxygen influence on energy. The reason why I am writing this story is to show how important oxygen is to us. Oxygen (O) is an absolutely important element required to sustain life (oxygen). We use oxygen in our cells. We breathe it into our lungs and then it enters the blood, which carries it to all of the body cells. Every minute of the day we breathe in air. Without oxygen (O) we could not live but a few minutes.

I look down at my periodic table that my chemistry teacher had just handed out to me. It contained a variety of colors and elements. It’s amazing how so many elements exists, I wonder if I can be someone so amazing to discover a new element. I run my hand over the newly copied, thin paper. I abruptly stop at the right side of the paper, where my pointer finger points at the first element of column 16 and the sixth element of period 2. Its name is oxygen. What’s so special about oxygen? For some odd reason I feel a special pull towards the element, a feeling of nostalgia and feeling of satisfaction and loyalty.