Chapter 3, Problem 63A

Iced Tea Use iced tea with and without ice cubes as examples to explain homogeneous and heterogeneous mixtures. If you allow all of the ice cubes to melt, what type of mixture remains?

Interpretation Introduction

Interpretation:

The type of mixture for iced tea with ice, iced tea without ice and iced tea with melted ice should be determined.

Concept introduction:

The mixture can be defined as a physically combined material made up of two or more different substances. The mixture can be of two types, heterogenous or homogenous. Heterogenous mixture is when the substances present in the mixture have different phases and the homogenous mixture is when the all the substances are present in the same phase.

Answer to Problem 63A

Iced tea without iced and melted ice is homogenous mixture and the iced tea with ice cubes is heterogenous mixture.

Explanation of Solution

The iced tea contains two main substance tea and water, sugar may or may not be present. For making iced tea, tea is infused with water and the resultant mixture is liquid, even if the sugar is mixed, the resultant mixture remains in liquid phase, as the sugar is dissolved. So, iced tea is a homogenous mixture.

When the ice is placed in the iced tea mixture it forms a heterogenous mixture as the ice is in solid phase and rest of the ingredients are in liquid phase. As the ice melts, it is converted to liquid water, which dissolves in the iced tea making the solution homogenous again.