Question

What are two substances put together but not chemically combined?

Answer 1

Hint: Before answering the solution, we should first know that The material is formed by two or more different substances that are not chemically bonded i.e mixture. The identities of the two substances remain the same and they are mixed forming solutions, suspensions, and colloids.

Complete answer:
The examples of combinations of substances that are not combined chemically are Mixtures and solutions. To combine substances chemically, chemical bonds are required.
Mixture- It is the mechanically blending of chemical substances without a chemical change, every ingredient retains its chemical properties but there can be a difference in the melting point of the mixture from the components involved. Mechanical or thermal methods can be used to separate some mixtures into their components. The mixtures in which the separation process is difficult are azeotropes.
Examples of mixture- Pure physical forces of Brownian motion are used to hold suspension like milk. These physical forces can be overcome by churning milk and separation of the parts in the suspension becomes possible. No chemical bonds are present in the mixture.
Solutions- The combining of substances by the means of intermolecular forces or ionic forces. They can get separated by physical change like boiling, boiling helps to take away the solvent. They are not combined chemically and can only be separated by a chemical change. They are also the combinations of substances that are not chemically combined.

Note:
Difference between Mixture and solution -
Substances are generally mixed and not completely dissolved, they are mixtures whereas the substances are dissolved completely and cannot be separated easily, they are solutions.
The mixture consists of two or three compounds that are not fused chemically, there are no physical interactions between them whereas a solution consists of two substances that are chemically mixed to form a new substance.
In mixture, there is no change in the chemical properties of the substance whereas in solution, the chemical properties are changed.
In mixture, there is no fixed ratio of amounts, it can vary whereas, in solutions, they have a fixed ratio of the amount of the substances.
Mixtures can get divided into two categories i.e, Homogenous and heterogenous whereas the solution is a kind of homogenous mixture.