RELATED PRODUCTS. This value kit includes 12 20 Amp Single-Pole This value kit includes 12 20 Amp Single-Pole 1 30 Amp Double-Pole 1 50 Amp Double-Pole THQP 1/2 in. Circuit Breakers. The load center includes a sturdy tin-plated copper buss bar and a galvanized box for increased durability and reliability.
An element is a substance consisting of atoms which all have the same number of protons-i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods. Although an element's atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses.
An element is a pure substance that is made from a single type of atom. Elements are the building blocks for all the rest of the matter in the world. Examples of elements include iron, oxygen, hydrogen, gold, and helium. Atomic Number. An important number in an element is the atomic number.