Which of the following foods is a heterogeneous mixture?
Choose one or more:
A. black coffee
B. fortune cookie
C. Lucky Charms cereal
D. ketchup
E. Hershey’s bar (plain)
The correct answer and explanation is :
The correct answer to the question is:
B. Fortune cookie
C. Lucky Charms cereal
Explanation:
A heterogeneous mixture is a mixture in which the components are not uniformly distributed, meaning you can observe different substances or phases within it.
- Fortune cookie (B): A fortune cookie is a heterogeneous mixture because the dough and the fortune inside are not evenly distributed throughout the cookie. The ingredients of the cookie itself may vary in texture, and you can also distinguish the fortune inside. The different components are clearly visible and separate, which makes it a heterogeneous mixture.
- Lucky Charms cereal (C): Lucky Charms cereal is another example of a heterogeneous mixture. It contains marshmallow shapes and cereal pieces that are visibly different from each other. The cereal pieces and marshmallows are not evenly mixed and can be separated easily, which makes it a classic heterogeneous mixture.
On the other hand:
- Black coffee (A): Black coffee is a homogeneous mixture because it is a uniform liquid once brewed. The coffee grounds are filtered out, and the resulting drink has a consistent appearance and composition throughout.
- Ketchup (D): Ketchup is generally considered a homogeneous mixture as well. Though it may contain small particles, they are finely distributed in the liquid and are not easily distinguishable to the naked eye. It has a uniform appearance, which classifies it as homogeneous.
- Hershey’s bar (plain) (E): A plain Hershey’s chocolate bar is also a homogeneous mixture because it is a smooth, uniform solid. While it may contain different ingredients like cocoa and milk, these are mixed thoroughly and indistinguishable from one another when you look at the bar.
In summary, the heterogeneous mixtures in the list are fortune cookie and Lucky Charms cereal because their components are not uniformly distributed.
