Question

1. explain explain the term phase as it relates to homogeneous and heterogeneous mixtures. 15. classify classify each of the following as a homogeneous or heterogeneous mixture. a. food coloring b. ice cubes in liquid water c. mouthwash d. mashed, unpeeled potatoes

Explanation:

1. In mixtures, a phase is a physically distinct part with uniform properties. In a homogeneous mixture, there is one phase throughout as components are uniformly distributed at a molecular level. In a heterogeneous mixture, there are two or more phases, and components are not uniformly distributed, and boundaries between phases can be seen or detected.

15.

• a. Food coloring in a solvent forms a homogeneous mixture as the coloring molecules are uniformly dispersed at a molecular level.
• b. Ice - cubes in liquid water is a heterogeneous mixture as there are two distinct phases (solid ice and liquid water) with a visible boundary between them.
• c. Mouthwash is usually a homogeneous mixture as its components like alcohol, flavorings, and water are uniformly mixed at a molecular level.
• d. Mashed, unpeeled potatoes are a heterogeneous mixture as there are different components (skin, pulp, etc.) and different phases present, and it is not uniform throughout.

Answer:

1. In mixtures, a phase is a physically distinct part with uniform properties. Homogeneous mixtures have one phase; heterogeneous mixtures have two or more phases.

15.
a. Homogeneous mixture
b. Heterogeneous mixture
c. Homogeneous mixture
d. Heterogeneous mixture