Classify each of the following mixtures as homogeneous or heterogeneous: (3.1) a. hot fudge sundae b. herbal tea c. vegetable oil
The Correct Answer and Explanation is:
Let’s break it down:
a. Hot fudge sundae
This is a heterogeneous mixture. In a hot fudge sundae, you can easily see the different components: the ice cream, the fudge, and any other toppings like nuts or sprinkles. These parts are not uniformly distributed, and each component maintains its own properties. You can even separate the fudge from the ice cream physically. Since you can see and identify the individual components, it’s classified as a heterogeneous mixture.
b. Herbal tea
Herbal tea is a homogeneous mixture (assuming it’s properly brewed). When you make herbal tea by steeping herbs in water, the herbs dissolve or infuse into the water, forming a uniform mixture. You can’t easily distinguish between the herbs and the water once it’s mixed, because the particles are evenly distributed. This makes it a homogeneous mixture, as the composition is consistent throughout.
c. Vegetable oil
Vegetable oil is also a homogeneous mixture. When you pour vegetable oil, you notice that it appears uniform in texture and appearance. It consists of different kinds of molecules (like triglycerides), but they are blended together in such a way that the oil has a consistent composition throughout. Even though the oil may consist of different types of fatty acids, these are not distinguishable to the naked eye, which is why vegetable oil is considered a homogeneous mixture.
Explanation:
- Homogeneous mixtures have a uniform composition throughout. The individual components are not visible or separable by simple means. Examples include solutions like salt in water or air, where the components are evenly distributed.
- Heterogeneous mixtures, on the other hand, have distinct, separate components that are easy to identify and separate. Examples include a salad or a hot fudge sundae, where the different ingredients are visibly distinct.
So, the classification depends on whether the components are uniformly mixed (homogeneous) or if the mixture has visible distinct parts (heterogeneous).
