In chemistry and physics, an element is a substance that cannot be broken down into a simpler substance by chemical means. A pure element is a substance consisting of a single type of atom, with its chemical properties determined by that atom’s atomic number, which is the number of protons in its nucleus. Examples of elements include carbon, oxygen, aluminum, iron, gold, copper, mercury, and lead.

Elements and Their Atoms

In chemistry and physics, an element is a substance that cannot be broken down into a simpler substance by chemical means. A pure element is a substance consisting of a single type of atom, with its chemical properties determined by that atom’s atomic number, which is the number of protons in its nucleus. Examples of elements include carbon, oxygen, aluminum, iron, gold, copper, mercury, and lead.

Elements and Their Atoms

In chemistry and physics, an element is a substance that cannot be broken down into a simpler substance by chemical means. A pure element is a substance consisting of a single type of atom, with its chemical properties determined by that atom’s atomic number, which is the number of protons in its nucleus. Examples of elements include carbon, oxygen, aluminum, iron, gold, copper, mercury, and lead.