What do we call a combination of two or more substances that do not form a new substance?

A mixture is defined as a combination of two or more substances that retain their individual properties and do not chemically bond to form a new substance. This means that the components of a mixture can be physically separated. For example, when you mix sand and salt, each substance remains distinct with its original properties, and you can separate the sand from the salt through physical means, such as using water or filtration.

In contrast, an element is a pure substance that cannot be broken down into simpler substances, and a compound is formed when two or more elements chemically combine to create a new substance that has different properties from its individual elements. A solution is a specific type of mixture where one substance (the solute) is completely dissolved in another (the solvent), resulting in a homogeneous distribution of the components. However, a mixture encompasses a broader definition, including both homogeneous (solutions) and heterogeneous mixtures. Therefore, the correct term for a combination of substances that do not create a new entity is indeed a mixture.