Elements and compounds have different characteristics due to their different structures and compositions. Elements are the simplest form of matter and consist of one type of atom. They cannot be broken down into simpler substances by chemical means. Examples of elements include hydrogen, oxygen, carbon, and iron. Compounds, on the other hand, are combinations of two or more different elements. They can be broken down into simpler substances by chemical means. Examples of compounds include water (H2O), table salt (NaCl), and carbon dioxide (CO2).
The properties of elements and compounds also differ. Elements have their own characteristic properties such as boiling point, melting point, color, and density. The properties of compounds are determined by the combination of their elements. For example, water has a boiling point of 100°C, a melting point of 0°C, and is transparent. These properties are determined by the combination of hydrogen and oxygen atoms.