Chalcogen Essay

In conclusion, for all three paragraphs which they all relate to my thesis statement is that in

According to Carolyn Ruth, author of “Where Do Chemical Elements Come From,” chemical elements came from the explosion of stars, also known as supernovas. In her article, Carolyn states that a newborn star is mainly composed of the first element on the periodic table, Hydrogen. Due to the high pressure within the star, a fusion process begins that fuses two protons and two neutrons together to form the second element, Helium. These fusion processes continue to form elements that weigh less than Iron. Once the star creates all elements up to Iron, the star eventually collapses and explodes. One article that agrees with Carolyn’s theory is “The Origin of the Elements and the Life of A Star”. According to this article, stars produce nuclear reactions

Gallium was discovered by the French chemist Paul Emile Lecoq de Boisbaudran in 1875 in an examination of a sphalerite sample, and found it by its characteristic spectrum, its two violet lines. Lecoq named the element “gallia”, from the Latin word Gallia meaning Gaul, after his native land of France; he also named the element after himself (“le coq” is french for “the rooster”and the Latin word for rooster is “gallus”).

Be sure to provide a strong and specific thesis statement with a nice introduction to your essay. Also be sure to provide names, dates, book titles, court cases, statistics and any and all other relevant facts you can think of to support your answer. Staple this sheet to the front of your essay and be sure to follow the formatting rules discussed for previous FRQ’s.

situations. In this essay, I am to vindicate my thoughts utilizing historical evidence, such as

I choose Sulfur because of it’s bright yellow color which really catches your attention. I also found it very interesting how much damage sulfur really is to the human. Plus is a very hard element to locate due to the fact that it can mainly be found by hot springs or volcanoes. Sulfur, also spelled sulphur, is a chemical element with the symbol S and atomic number of 16. It is an abundant non-metal and at room temperature is a bright yellow crystalline solid. Chemically, sulfur combines with all elements except for gold, platinum, iridium, nitrogen, tellurium, iodine, and the noble gases. Sulfur forms over 30 solid allotropes, more than any other element. Allotropes are different forms in which an element can exist. I picked this element because

In 1787, an unusual rock had come across the work of Dr. Adair Crawford when investigating witherite, a mineral in Strontian, Scotland ("Strontium | Periodic Table." Royal Society of Chemistry). The discoverer of the element was testing the results of witherite and hydrochloric acid. When Dr. Crawford mixed witherite with hydrochloric acid he did not get the results he expected. He assumed that his sample of witherite was contaminated with an unknown mineral, a mineral he named strontianite ("The Element Strontium." It's Elemental). The discovery by Dr. Adair Crawford was the start of strontianite, but it was not the end of research on this element. Although Dr. Crawford technically discovered strontianite, he did not prove that it was a new element. In 1791, Thomas Charles Hope, continued the investigation of strontianite ("Strontium | Periodic Table." Royal Society of Chemistry). Through his investigation, Hope proved that strontianite was a new element. Finally the element, now known as Strontium, was isolated. Strontium was first isolated by Sir Humphry Davy, an English chemist, in 1808 through the electrolysis of a mixture of strontium chloride and mercuric oxide ("The Element Strontium." It's

Mercury also came up in science class. When first presented with the jumble of the periodic table, I scanned for mercury and couldn’t find it. It is there—between gold, which is also dense and soft, and thallium, which is also poisonous. But

The essay fails to address several aspects of the assignment and demonstrates a lack of clear understanding of the concepts and facts. It contains serious flaws.

This week’s goal is to begin collecting information and planning for the final Commentary essay by reading, thinking, and engaging with your topic. As you determine your topic, you’ll want to be sure it’s viable by understanding the perspectives within it and determining what unique angle you can offer to the conversation. Under each prompt or question below, provide detailed information that shares information about your topic.

Cobalt was discovered by a Swedish chemist by the name of Georg Brandt. In 1735, Georg was trying to prove that certain minerals had the ability to color glass blue and was not due to bismuth but due to an unknown element (1). Since then, it has developed into a highly useful isotope.

Part 3 of the experiment utilized Spectrophotometry to determine the iron content in the iron (III) oxalate complex. The results were combined with findings from Part 1 and

percent by weight of the oceans and, as a constituent of most rocks and minerals,

     In July of 1898, Marie and Pierre Cure discovered Polonium. They named the element after Marie's birth country, Poland. Chemically, this new element was very similar to bismuth, but it contained radioactivity, so it must be new. In December of 1898, the Curie's discovered yet another element. They named this one radium, from the Latin word for ray. The two new elements had completely different chemical properties, but they both had very strong radioactivity.

The environment generally refers to the surrounding’s of an object or an individual. It can be in the form of the physical environment, biophysical environment, built environment, social environment and the natural environment among other forms. The natural environment refers to the naturally occurring flora and fauna together with the land on which they occupy.