Chemist

some of the qualities that metals have. Two examples of metalloids would be germanium and silicon. These metalloids are used in everyday life, and our lives would be very much different without them. Germanium was discovered in the year of 1886 by a chemist named Winkler. The metalloid was named after Germany. When germanium is purified, it is a grayish color. Though, it has physical similarities of metals and crystals. It is in the same family as silicon. Germanium can be found in many places.…

Brønsted–Lowry Left hand side: Johannes Nicolaus Brønsted (1879 - 1947) Right hand side: Thomas Martin Lowry (1874 - 1936) THEORY An acid is a proton (H+) donor A base is a proton (H+) acceptor EXPLANATION OF THE THEORY: Acids are proton donors and bases are proton acceptors. A hydrogen ion is the same thing as a proton since hydrogen consists of a proton and an electron. When hydrogen loses an electron all that is left is a proton. According to the Brønsted-Lowry theory of acids and…

One of the biggest cases in U.S history involved the banishment of leaded gas in the environment. Leaded gas in US wasn 't banned until a man named Dr. Patterson, brought the issue into awareness to American people. Dr. Patterson, a chemist, found out that lead was not only bad but extremely dangerous. In 1922, Lead was introduced into gasoline for the purpose of high-performance vehicles and in effect raised concern for public health. Lead wasn’t seriously considered even after five…

Scientist Contribution Significance Lavoisier (1743-1794) Antonie-Laurent Lavoisier was born on August 26, 1743 in France’s capital city, Paris. One of his major discoveries was the founding of the law of conservation of mass. This law states the weights of reagents and products are conserved through any chemical reactions. This is demonstrated through his combustion experiments. He pointed out that combustion requires air, since the reactants are weighed heavier than its products. This…

powerful of a vehicle only a one cylinder engine not many people got to buy it the first time.Only the rich could afford such vehicles. By the 1900’s everyone drove a car a thus creating more of a carbon footprint. 5 years later a car created by a chemist would make the blueprints create a car that would change the world over time.In order to fix this problem is why…

Sun reflects very strong UV light. UV light can be dangerous for humans in many ways. It can be harmful to our skin and eyes. We need to protect our eyes and skin from strong direct UV light of sun. The problem that I would like to discuss is about the effects of the UV light on skin. Sunlight can cause skin cancer. Skin cancer is one of the most common cancers in the world. The most dangerous skin cancer type is called melanoma. It is a cancer of pigment(color)-producing skin cells. It is…

Maurice Wilkins and Rosalind Franklin, had gotten X-ray images of DNA that suggested a helical, spiral shape (“The Francis Crick Papers,” 2013). To create their models, Watson and Crick adopted the model-building technique, developed by American chemist Linus Pauling. To determine the structure of molecules, Pauling used pieces, shaped according to the known characteristics of the atom it represented. Then, he manipulated the pieces to figure out the most logical way for them to fit together…

American Health and Medicine talk was very interesting talk given by David G. Hilmey from St. Bonaventure University. He focused on Ethnoscience, which looks at the indigenous knowledge systems to connect culture with science. He is a synthetic organic chemist. He focused on The Seneca tribe, which is about 8,000 citizens. In particular, the Faithkeepers School. The course he focused on was medicine and health. A issue he came across was the youth not being involved in the Seneca Culture,…

Ernest Rutherford was a chemist and a physicist that was born on August 30, 1871, in Spring Grove, New Zealand. He was a pioneer of nuclear physics and the first to split an atom. He was awarded a Nobel Prize in chemistry for his theory of the atomic structure. He discovered alpha and beta rays, that the atom could be split, and contributed to the Atomic Theory. He used the gold foil to see how to alpha and beta rays would bounce off off different atoms. Ernest was responsible for a remarkable…

Georges Seurat The creator of Pointillism was born December 2, 1859 in Paris, France. Seurat’s first introduction and art lesson were introduced by his uncle. In 1875 he began attending attending a local art school, and started his first formal art lessons under sculptor Justin Lequien. Then he started training under artist Henri Lehmann when he attended École des Beaux-Arts in Paris in 1878 to 1879. However, Seurat choose to leave the school and continue to study on his own. He was very…