Question

What is an element? Give any two characteristics.

Answer 1

Part 1: Elements

• A substance that contains only one kind of atom is called an element.
• The building block of the element is an atom
• Elements are pure substance since consists of only one kind of atom.

Part 2: It has its own unique characteristics or properties.

• Atoms of the same elements show the same physical and chemical properties and vice versa.
• Elements cannot be broken down into simpler units by any physical or chemical methods
• For example, the element oxygen $\left(\mathrm{O}\right)$contains oxygen atoms only, and all atoms of oxygen show the same physical and chemical properties.