Arsenic is a naturally occurring semi-metal element. Its atomic number is 33, and its only stable isotope has an atomic weight of 74.92. Arsenic has been used since ancient times, but it was first isolated by the German ...
Metalloids are chemical elements that have properties common with both metals and nonmetals. Some metalloid semiconductors are able to carry an electrical charge under the right conditions, a property that allows them to...
Arsenic occurs naturally in the environment and is often found within the Earth's crust, extending its presence into soil, water and rock. Arsenic is also forced into the air during certain chemical processes, causing en...
Arsenic is a gray or yellow crystalline that often looks like a jagged rock when it is in its natural state. It is typically somewhat shiny, resembling silver.
Arsenic is not particularly reactive though yellow arsenic is the most reactive and reacts with halogens under controlled conditions, fluorine and slowly with air (oxidization only). Arsenic does not react with water and...
Enthlapy is a thermodynamic property of a system that expresses the ability to perform non-mechanical work and release heat. Enthalpy is represented as H, while specific enthalpy is represented as h.
Crude protein is a term for the total protein content of a food source as determined by its nitrogen content. The term is most often used in scientific testing and on the labels of pet foods.