Question

A substance that contains only one kind of atom is _____(an element/a mixture).

Answer 1

If a substance contains only one kind of atom, no different kind of atoms is not present in it then it is called an element. The properties of elements are:

• The building block of an element is atoms. For example, the silver element contains only one kind of atom of silver only.
• Elements are pure substances since it contains only one kind of atom.
• Every element has its unique properties.
• Atoms of the same element have the same physical and chemical properties.
• Atoms of different elements have different physical and chemical properties.
• Elements cannot be separated or broken down into simpler components by a physical or chemical approach.

Therefore, a substance that contains only one kind of atom is an element.