Each person or organisation who agrees to do something in a contract is called a party. An agreement, or a contract, says what you and the other person or organisation have agreed to do.It is a written list of the promises you have made. The best form of contract is written on paper and signed by each party.Some examples of contracts include: contract is used when people or organisations have agreed to do something together. A contract is often used to: 1  say what is expected of you. 2  say what you expect of the other person or organisation. 3  protect each otherâs needs and rights.
Beryllium improves many physical properties when added as an alloying element to aluminium, copper (notably the alloy beryllium copper), iron and nickel.Tools made of beryllium copper alloys are strong and hard and do not create sparks when they strike a steel surface.t is a divalent element which occurs naturally only in combination with other elements in minerals. Notable gemstones which contain beryllium include beryl (aquamarine, emerald) and chrysoberyl. As a free element it is a steel-gray, strong, lightweight and brittle alkaline earth metal.
Beryllium is a hard, brittle metal with a grayish-white surface. It is the least dense (lightest) metal that can be used in construction. Its melting point is 1,287Â°C (2,349Â°F) and its boiling point is estimated to be about 2,500Â°C (4,500Â°F). Its density is 1.8 grams per cubic centimeter.hey include beryllium, magnesium, calcium, strontium, barium, and radium. Elements in the same column of the periodic table have similar chemical properties. The periodic table is a chart that shows how the chemical elements are related to each other.