Amixture of flour and water is called a mixture because the substances do not dissolve. a. homogeneous c. mass b. solid d. heterogeneous

d. heterogeneous

Explanation:

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present.

Heterogeneous mixtures  : It is a mixture that has non-uniform composition throughout the solution and the particle size or shapes are also different. There is a physical boundary between the dispersed phase and dispersion medium as the substances do not dissolve in each other.

Example: Flour in water

Homogeneous mixtures  : It is a mixture that has uniform composition throughout the solution and the particle size or shapes are not different. There is no physical boundary between the dispersed phase and dispersion medium as the substances dissolve in each other.

Example: Salt in water