Nov 29, 2025 · Elements are the fundamental materials of which all matter is composed. Learn more about the origins, distribution, and characteristics of chemical elements in this article.

A chemical element is a species of atom defined by its number of protons. The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8: each …

Jul 23, 2025 · Elements in chemistry are the building blocks of all the matter in the universe. There are 118 elements known to humans that are arranged in the table called the periodic table.

What is an element? An element is a substance that cannot be broken down into any other substance. Every element is made up of its own type of atom. This is why the chemical elements are all very...

An element is the basic chemical building block of matter; it is the simplest chemical substance. Elements vary from being a small percentage to more than 30% of the atoms around us.

Oct 17, 2020 · At present, there are 118 known elements. If atoms of an element carry an electrical charge, they are called ions. Atoms of an element with different numbers of neutrons are called …

Elements are examples of pure substances because they contain only one type of atom. For example, copper is an element that can be molded into copper tubing. If you could zoom in on the copper …

What is an element in chemistry? We explore the definition of an element, and discuss their characteristics and properties.

Jun 7, 2024 · A chemical element is a substance that cannot be broken down by chemical means. Although elements aren't changed by chemical reactions, new elements may be formed by nuclear …

Nov 15, 2025 · Elements are pure substances that cannot be broken down (or decomposed) into simpler substances by chemical changes or chemical reactions. Each element has a definite atomic number …