Period 5 element

the Most Important Element Alrecus What is Oxygen? Oxygen is one of the periodic table elements. Oxygen is also a gaseous chemical. Oxygen makes up more than twenty percent of the Earth's air. Oxygen is a dry and unscented. Oxygen is exceptionally receptive. Oxygen was found interestingly by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an 112, freely, found oxygen in 1774 and distributed his discoveries that year, three years before Scheele distributed. Antoine Lavoisier,…

electrons go around the nucleus is the same way planets orbit. Elements have the ability to be present even with a varying number of neutrons. This is to be called isotopes. His point with this is that these isotopes are very balanced while others may be not so balanced. This will then be called radioactivity. Every isotope that becomes radioactive eventually decays. So to conclude this chapter, there are clocks for all forms of time. Chapter 5 Dawkins is talking about some very well thought…

colorless. Fluorite is known as the most colorful mineral in the world. Each colored fluorite has its own name. The most common colors for fluorite come in purple, blue, yellow, or green (King, Fluorite.) What makes fluorite colorful depends on what elements are substituting calcium in the crystalline structure. Fluorite is an interesting mineral because of its wide range of uses. People use some form fluorite everyday. In industry, fluorite is used as a flux for smelting (University of…

people regarded water and air as an element. But through Lavoisier discovery, he stated that water and air are compounds. From this, he discovered gases which was decomposed from these mediums. He coined…

(Duchamp). This quote is the simplest definition of alchemy. Alchemy is a concept that explains what is going on around us. More importantly, it provides an explanation for what we have always been told to believe. It dates back as far as the Renaissance period, and while similar to sciences, was not at first considered a science due to its mystical aspects. Alchemy, in particular, began as the pursuit of gold and eternal life. Similar to the basic concept of chemistry, it involved the…

The elements sodium and chlorine show emergent properties, because when sodium is alone it's just a metal and chlorine is a poisonous gas. When you combine the two with an ionic bond the emergent properties are shown, because they come together to form table salt, but on their own this wouldn't be possible. 2.1.2) Yes, even though organisms only require it in small amounts it is still essential because it contributes to the organism's development. 2.1.3) If a person has an iron deficiency it…

don’t know about this is that some antiperspirants use aluminum compounds as a way to temporarily plug the sweat ducts in your body, stopping the flow of sweat to the skin’s surface (National Cancer Institute). Though aluminum is a very abundant element, research shows that aluminum has no beneficial role to the body and should be avoided. Some theories state that the aluminum compounds found in antiperspirants can be the cause of breast cancer, Alzheimer’s, kidney disease, and dementia…

According to the World Health Organization, mercury and lead are two of the top hazardous chemicals of public health concern. Exposure to these toxicants results in serious damage in human bodies, especially young children. If human consume food or drinks that are contaminated with mercury or lead in their diet, they will cause neurological, physical, and behavioral effects, which are irreversible. The degree of severity depends on the amount of hazards in bodies (“Lead”, 2017 & “Mercury”, 2017)…

Introduction In this lab, the size of atoms and molecules in solids and liquids were estimated by using the cubical and spherical atomic model. The former model was used in a simple experiment that calculated the displacement in water and in this case, Aluminum and Copper were used. The spherical model was performed by finding the amount of amount of empty space within a sample of Lead shot. The molecular size in liquids and solids was found by calculating the density and molecular size of…

The element copper can be found on the periodic table by looking at its atomic number which is 29. The element copper has a atomic mass of 63.546. Copper was one of the first metals altered by humans. The oldest metal object found in the Middle East consists of copper, it was a tiny awl dating back as far as 5100 B.C. Most copper occurs in ores and must be smelted for purity before it can be used. But natural chemical reactions do sometimes release native copper, according to Chemicool; this…