Q. 3.6 - An Introduction to General, Organic, and Biological Chemistry

Question

A dietitian includes one of the following mixtures in the lunch menu. Classily each as homogeneous or heterogeneous.

a. nonfat milk

b. chocolate-chip ice cream

c. peanut butter sandwich

d. cranberry juice

Step-by-Step Solution

Answer

a. nonfat milk is a homogenous

b. chocolate-chip ice cream is a heterogenous

c. peanut butter sandwich is a heterogenous

d. cranberry juice is a homogenous

Step 1: Given Information (a)

 (a) The nonfat milk in the lunch menu are homogeneous or heterogeneous.

Step 2: Explanation (a)

(a) Nonfat milk:
Nonfat milk contains only milk without the fats which are generally observed as oil globules.
Hence the milk is assessed as homogeneous mixture.

Step 3: Given Information (b)

 (b) The chocolate-chip ice cream the lunch menu are homogeneous or heterogeneous.

Step 4: Explanation (b)

(b) Chocolate chip and ice cream:
Chocolate chips are cover frozen dessert but they're not evenly distributed hence the mixture is assessed as heterogeneous mixture.  

Step 5: Given Information (c)

 (c) The peanut butter sandwich in the lunch menu are homogeneous or heterogeneous.

Step 6: Explanation (c)

(c) paste sandwich:
The spread sandwich could be a combination of spread sauce applied within the slice of bread. The mixture is classed as heterogeneous mixture.

Step 7: Given Information (d)

 (d) The cranberry juice in the lunch menu are homogeneous or heterogeneous.

Step 8: Explanation (d)

(d) Cranberry juice:
The fruit crush could be a uniform mixture cranberry pulp, water, salt and sugar. These all components are uniformly distributed and hence it's classified as homogeneous mixture.