that would be an element ;)
An element is a substance that cannot be broken down into simpler substances through chemical reactions.
All of the elements of the Periodic Table cannot be broken down into simpler substances.
An element is a substance that chemical reactions cannot break down into simpler substances. Elements are made up of only one type of atom and cannot be further broken down by chemical means. Examples of elements include gold, oxygen, and carbon.
An element is a substance that cannot be broken down into simpler substances by chemical reactions. Each element is made up of only one type of atom. Examples of elements include oxygen, gold, and carbon.
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
An element cannot be separated into simpler substances by chemical means.
The simplest type of substance is an element. They cannot be split up even by chemical reactions. There are over 100 elements, and the Periodic Table is a list of them.
In general, a substance produced during a chemical change cannot be easily changed back into the original substance. Chemical changes are characterized by the formation of new substances with different chemical properties than the original substances. Reversing a chemical change typically requires a different set of reactions or processes.
molecule
Elements cannot be reduced to simpler substances by chemical means. Each element is composed of identical atoms that cannot be broken down further through chemical reactions.
The atom cannot be broken by chemical methods.
cannot be broken down into simpler substances by chemical means