What is a substances made by combing to or more different material with no chemical reaction?

A substance made by combining two or more different materials without a chemical reaction is called a mixture. In a mixture, the individual components retain their original properties and can often be separated by physical means, such as filtration or evaporation. Examples include air, which is a mixture of gases, and salad, which combines various vegetables without altering their chemical structure. Mixtures can be homogeneous (uniform composition) or heterogeneous (distinct components).