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 …

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 …

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

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.

Dec 5, 2019 · Elements may be thought of as the basic chemical building blocks of matter. There are 118 known elements. Each element is identified according to the number of protons it has in its …