Euclid's Elements

not first discovered by Joseph, instead the famous Swedish chemist, Carl W. Scheele, in 1772. Joseph discovered Oxygen independently in 1774. Joseph published his findings in the same year that he discovered the element. Three years later Scheele published his findings on the element. There is a lot of debating in the world of science on who discovered Oxygen first. Most of the credit is given to Priestley or both him and…

The element name given is Phosphorus, it is symbolized in on the periodic table as a P. Its atomic number is 15 and the atomic mass is 30.974 (which is a rounded number). Group number the element is apart of on the periodic table is 15. Phosphorus’ listed isotopes are P-31 (stable) and 23 others and its electron configuration is [Ne]3s2 3p2. Physical properties of the element are varied depending on which allotrope of the element you are talking about. White Phosphorus has a melting point of…

used in many industries including mining and iron and steel production. Additionally, cyanide treats wastewater. According to Wu, F. et al. (2014), socio economics status would be a factor likely to increase exposure of foodborne toxicity because people with low-income consume only one or two foods. On the other hand, children under 18 years old are at high risk in toxicological effects of cyanide since they are immature and differ from adult (ATSDR, 2006). Cyanide compounds would be lethal…

What are group one elements? Group one elements are alkali metals. The physical properties of group one elements are that they are shiny and the alkali metals are very soft. Lithium is the hardest alkali metal and they become softer as you go down the group. The chemical properties of group one is that they’re very reactive when mixed with water or when in contact with the air. Each element in group one has one electron in their outermost shell. Also, group one elements get more reactive as you…

Fluorine is an element on the periodic table. Fluorine atomic number is 9. Fluorine is a chemical that looks pale and yellow. The atomic weight is 18.9984032 and the density is 0.001696 grams per cubic centimeter. Fluorine is a non-medal the period number is 2 its group number is 17 and the halogen. Fluorine is a gas. Fluorine was discovered by Henri Moissanin 1886. Ferdinand Frederick Henri Moissan was a French chemist who won the 1906 Nobel Prize in Chemistry for his work in isolating…

Gibson 1 Reagan Gibson Tripp Sanders Chemistry 1 May 2016 Introduction A Chemy Called Al is quite an interesting read. It is written by Wendy Isbell. It tells the story of a girl named Julie. The book begins talking about Julie and her electrical issues. It talks about her power being out but the TV still being on. It had to do with X-Ray Machines around the whole country. Well she goes to the land of Mathematics, she is afraid her friends are in danger- so she decides to go find them.…

Task-5 a) • Metals Metal structure is made up of crystals of metals which are made up of positive metal ions and these ions are surrounded by a sea of delocalized electrons. To separate these substances from this crystal lattice a lot of energy is needed. In between the positive and negative ions is present a strong electrostatic force of attraction. That is the reason why metals have strong melting and boiling points. In order to slide one layer of the metal ions over the other layer very less…

Today midian wants to give you a reason to read and to show science is not boring so please read. this 4 paragraph paper about molecules and what are they?They are cool genes we wear and they are cool to show off so sit back enjoy and thank you. 1# The first molecule is carbohydrates it's kinda of a sugar molecule the carbohydrates let your body talk to each other to keep you going. It's basically seen in sugar and they are made of a tiny little other substance called atoms. one sugar…

That being said I wanted to learn more about silicon and what people are putting in their bodies. Silicon is an element a pure substance that can’t be broken down. Silicon was first discovered in 1824 by a Swedish chemist named Jons Jacob Berzelius. This element is the second most abundant and it makes up about 27.7% of the earth’s crust. Although silicon is the second most abundant element, and it can’t be found free in nature. Silicon is usually found as silica or silicates. In order to…

Introduction Lead (Pb) contamination is a pervasive issue in many low-income neighborhoods throughout the United States. The toxicity of lead poses significant risks to human health, and proves to be especially harmful for children in terms of cognitive and physical development. Lead in the environment is primarily related to a legacy of anthropogenic sources including leaded gasoline, leaded paint, and various industrial applications. Although the presence of heavy metals is ubiquitous in the…