Characteristic: Pure substances have definite and constant physical and chemical properties, such as melting point, boiling point, density and chemical reactivity. Examples include elements like ...

Show answer Elements An element is a pure substance that cannot be broken down into any other substances. An element is made from just one type of atom , and examples include oxygen, hydrogen and ...

Letters from the alphabet are used to represent chemical elements close elementA pure substance which is made from only one type of atom. Elements are listed on the periodic table. . An element ...