Question

mixture
illustration
personal definition and essential characteristics:
examples
non - examples

Explanation:

A mixture is a combination of two or more substances that are not chemically combined. Its essential characteristics include being able to be separated by physical means and retaining the properties of its individual components. Examples include a salad (combination of vegetables), salt - water solution (salt and water), and air (mixture of gases like nitrogen, oxygen etc.). Non - examples are substances that are chemically bonded like water (H₂O) or table salt (NaCl), as they are compounds and not mixtures.

Answer:

Personal definition and essential characteristics: A combination of two or more substances not chemically combined, separable by physical means, retaining individual component properties.
Examples: Salad, salt - water solution, air.
Non - examples: Water (H₂O), table salt (NaCl).