Question

Classify each as a homogeneous or a heterogeneous mixtures:
a. blood d. tap water
b. chocolate-chip ice cream e. black coffee
c. brass (a blend of copper and zinc)

Answer 1

Here's the classification of each mixture:

a. **Blood** - Heterogeneous mixture (it contains different components like red blood cells, white blood cells, platelets, and plasma that can be seen separately).

b. **Chocolate-chip ice cream** - Heterogeneous mixture (the chocolate chips and ice cream base can be distinguished).

c. **Brass (a blend of copper and zinc)** - Homogeneous mixture (it has a uniform composition throughout, even though it is made from two distinct metals).

d. **Tap water** - Homogeneous mixture (generally, tap water has a uniform composition, although it may contain dissolved minerals and impurities that are not visible).

e. **Black coffee** - Homogeneous mixture (when brewed, coffee has a uniform composition, although the coffee solids are dissolved).

To summarize:
- Heterogeneous: a, b
- Homogeneous: c, d, e